Code

Cleanup exclude rule setup by using ls-files --exclude-standard flag
[tig.git] / tig.c
diff --git a/tig.c b/tig.c
index 14f73e62d9dd8db1d0652dfdd58ea7a6152c552e..15a42a436bf83e71cc6c0d4e41897fb7e24a05a5 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2006-2007 Jonas Fonseca <fonseca@diku.dk>
+/* Copyright (c) 2006-2008 Jonas Fonseca <fonseca@diku.dk>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
 #include <langinfo.h>
 #include <iconv.h>
 
-#include <curses.h>
+/* ncurses(3): Must be defined to have extended wide-character functions. */
+#define _XOPEN_SOURCE_EXTENDED
+
+#ifdef HAVE_NCURSESW_NCURSES_H
+#include <ncursesw/ncurses.h>
+#else
+#ifdef HAVE_NCURSES_NCURSES_H
+#include <ncurses/ncurses.h>
+#else
+#include <ncurses.h>
+#endif
+#endif
 
 #if __GNUC__ >= 3
 #define __NORETURN __attribute__((__noreturn__))
 #endif
 
 static void __NORETURN die(const char *err, ...);
+static void warn(const char *msg, ...);
 static void report(const char *msg, ...);
 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
 static void set_nonblocking_input(bool loading);
-static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
+static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
+static bool prompt_yesno(const char *prompt);
 
 #define ABS(x)         ((x) >= 0  ? (x) : -(x))
 #define MIN(x, y)      ((x) < (y) ? (x) :  (y))
@@ -73,7 +86,6 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 #define REVGRAPH_BRANCH        '+'
 #define REVGRAPH_COMMIT        '*'
 #define REVGRAPH_BOUND '^'
-#define REVGRAPH_LINE  '|'
 
 #define SIZEOF_REVGRAPH        19      /* Size of revision ancestry graphics. */
 
@@ -90,29 +102,35 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 #define DATE_COLS      STRING_SIZE("2006-04-29 14:21 ")
 
 #define AUTHOR_COLS    20
+#define ID_COLS                8
 
 /* The default interval between line numbers. */
-#define NUMBER_INTERVAL        1
+#define NUMBER_INTERVAL        5
 
-#define TABSIZE                8
+#define TAB_SIZE       8
 
 #define        SCALE_SPLIT_VIEW(height)        ((height) * 2 / 3)
 
+#define NULL_ID                "0000000000000000000000000000000000000000"
+
 #ifndef GIT_CONFIG
 #define GIT_CONFIG "git config"
 #endif
 
 #define TIG_LS_REMOTE \
-       "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
+       "git ls-remote . 2>/dev/null"
 
 #define TIG_DIFF_CMD \
-       "git show --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
+       "git show --pretty=fuller --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
 
 #define TIG_LOG_CMD    \
        "git log --no-color --cc --stat -n100 %s 2>/dev/null"
 
+#define TIG_MAIN_BASE \
+       "git log --no-color --pretty=raw --parents --topo-order"
+
 #define TIG_MAIN_CMD \
-       "git log --no-color --topo-order --boundary --pretty=raw %s 2>/dev/null"
+       TIG_MAIN_BASE " %s 2>/dev/null"
 
 #define TIG_TREE_CMD   \
        "git ls-tree %s %s"
@@ -125,6 +143,7 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 #define TIG_PAGER_CMD  ""
 #define TIG_STATUS_CMD ""
 #define TIG_STAGE_CMD  ""
+#define TIG_BLAME_CMD  ""
 
 /* Some ascii-shorthands fitted into the ncurses namespace. */
 #define KEY_TAB                '\t'
@@ -135,8 +154,11 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 struct ref {
        char *name;             /* Ref name; tag or head names are shortened. */
        char id[SIZEOF_REV];    /* Commit SHA1 ID */
+       unsigned int head:1;    /* Is it the current HEAD? */
        unsigned int tag:1;     /* Is it a tag? */
+       unsigned int ltag:1;    /* If so, is the tag local? */
        unsigned int remote:1;  /* Is it a remote ref? */
+       unsigned int tracked:1; /* Is it the remote for the current HEAD? */
        unsigned int next:1;    /* For ref lists: are there more refs? */
 };
 
@@ -309,6 +331,7 @@ sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
        REQ_(VIEW_LOG,          "Show log view"), \
        REQ_(VIEW_TREE,         "Show tree view"), \
        REQ_(VIEW_BLOB,         "Show blob view"), \
+       REQ_(VIEW_BLAME,        "Show blame view"), \
        REQ_(VIEW_HELP,         "Show help page"), \
        REQ_(VIEW_PAGER,        "Show pager view"), \
        REQ_(VIEW_STATUS,       "Show status view"), \
@@ -320,6 +343,7 @@ sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
        REQ_(PREVIOUS,          "Move to previous"), \
        REQ_(VIEW_NEXT,         "Move focus to next view"), \
        REQ_(REFRESH,           "Reload and refresh"), \
+       REQ_(MAXIMIZE,          "Maximize the current view"), \
        REQ_(VIEW_CLOSE,        "Close the current view"), \
        REQ_(QUIT,              "Close all views and quit"), \
        \
@@ -350,9 +374,14 @@ sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
        REQ_(SHOW_VERSION,      "Show version information"), \
        REQ_(STOP_LOADING,      "Stop all loading views"), \
        REQ_(TOGGLE_LINENO,     "Toggle line numbers"), \
+       REQ_(TOGGLE_DATE,       "Toggle date display"), \
+       REQ_(TOGGLE_AUTHOR,     "Toggle author display"), \
        REQ_(TOGGLE_REV_GRAPH,  "Toggle revision graph visualization"), \
+       REQ_(TOGGLE_REFS,       "Toggle reference display (tags/branches)"), \
        REQ_(STATUS_UPDATE,     "Update file status"), \
+       REQ_(STATUS_CHECKOUT,   "Checkout file"), \
        REQ_(STATUS_MERGE,      "Merge file using external tool"), \
+       REQ_(STAGE_NEXT,        "Find next chunk to stage"), \
        REQ_(TREE_PARENT,       "Switch to parent directory in tree view"), \
        REQ_(EDIT,              "Open in editor"), \
        REQ_(NONE,              "Do nothing")
@@ -408,31 +437,33 @@ get_request(const char *name)
 static const char usage[] =
 "tig " TIG_VERSION " (" __DATE__ ")\n"
 "\n"
-"Usage: tig [options]\n"
-"   or: tig [options] [--] [git log options]\n"
-"   or: tig [options] log  [git log options]\n"
-"   or: tig [options] diff [git diff options]\n"
-"   or: tig [options] show [git show options]\n"
-"   or: tig [options] <    [git command output]\n"
+"Usage: tig        [options] [revs] [--] [paths]\n"
+"   or: tig show   [options] [revs] [--] [paths]\n"
+"   or: tig blame  [rev] path\n"
+"   or: tig status\n"
+"   or: tig <      [git command output]\n"
 "\n"
 "Options:\n"
-"  -l                          Start up in log view\n"
-"  -d                          Start up in diff view\n"
-"  -S                          Start up in status view\n"
-"  -n[I], --line-number[=I]    Show line numbers with given interval\n"
-"  -b[N], --tab-size[=N]       Set number of spaces for tab expansion\n"
-"  --                          Mark end of tig options\n"
-"  -v, --version               Show version and exit\n"
-"  -h, --help                  Show help message and exit\n";
+"  -v, --version   Show version and exit\n"
+"  -h, --help      Show help message and exit";
 
 /* Option and state variables. */
+static bool opt_date                   = TRUE;
+static bool opt_author                 = TRUE;
 static bool opt_line_number            = FALSE;
+static bool opt_line_graphics          = TRUE;
 static bool opt_rev_graph              = FALSE;
+static bool opt_show_refs              = TRUE;
 static int opt_num_interval            = NUMBER_INTERVAL;
-static int opt_tab_size                        = TABSIZE;
-static enum request opt_request                = REQ_VIEW_MAIN;
+static int opt_tab_size                        = TAB_SIZE;
+static int opt_author_cols             = AUTHOR_COLS-1;
 static char opt_cmd[SIZEOF_STR]                = "";
 static char opt_path[SIZEOF_STR]       = "";
+static char opt_file[SIZEOF_STR]       = "";
+static char opt_ref[SIZEOF_REF]                = "";
+static char opt_head[SIZEOF_REF]       = "";
+static char opt_remote[SIZEOF_REF]     = "";
+static bool opt_no_head                        = TRUE;
 static FILE *opt_pipe                  = NULL;
 static char opt_encoding[20]           = "UTF-8";
 static bool opt_utf8                   = TRUE;
@@ -441,145 +472,91 @@ static iconv_t opt_iconv         = ICONV_NONE;
 static char opt_search[SIZEOF_STR]     = "";
 static char opt_cdup[SIZEOF_STR]       = "";
 static char opt_git_dir[SIZEOF_STR]    = "";
-static char opt_is_inside_work_tree    = -1; /* set to TRUE or FALSE */
+static signed char opt_is_inside_work_tree     = -1; /* set to TRUE or FALSE */
 static char opt_editor[SIZEOF_STR]     = "";
 
-enum option_type {
-       OPT_NONE,
-       OPT_INT,
-};
-
-static bool
-check_option(char *opt, char short_name, char *name, enum option_type type, ...)
-{
-       va_list args;
-       char *value = "";
-       int *number;
-
-       if (opt[0] != '-')
-               return FALSE;
-
-       if (opt[1] == '-') {
-               int namelen = strlen(name);
-
-               opt += 2;
-
-               if (strncmp(opt, name, namelen))
-                       return FALSE;
-
-               if (opt[namelen] == '=')
-                       value = opt + namelen + 1;
-
-       } else {
-               if (!short_name || opt[1] != short_name)
-                       return FALSE;
-               value = opt + 2;
-       }
-
-       va_start(args, type);
-       if (type == OPT_INT) {
-               number = va_arg(args, int *);
-               if (isdigit(*value))
-                       *number = atoi(value);
-       }
-       va_end(args);
-
-       return TRUE;
-}
-
-/* Returns the index of log or diff command or -1 to exit. */
-static bool
+static enum request
 parse_options(int argc, char *argv[])
 {
+       enum request request = REQ_VIEW_MAIN;
+       size_t buf_size;
+       char *subcommand;
+       bool seen_dashdash = FALSE;
        int i;
 
-       for (i = 1; i < argc; i++) {
-               char *opt = argv[i];
-
-               if (!strcmp(opt, "log") ||
-                   !strcmp(opt, "diff") ||
-                   !strcmp(opt, "show")) {
-                       opt_request = opt[0] == 'l'
-                                   ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
-                       break;
-               }
+       if (!isatty(STDIN_FILENO)) {
+               opt_pipe = stdin;
+               return REQ_VIEW_PAGER;
+       }
 
-               if (opt[0] && opt[0] != '-')
-                       break;
+       if (argc <= 1)
+               return REQ_VIEW_MAIN;
 
-               if (!strcmp(opt, "--")) {
-                       i++;
-                       break;
-               }
+       subcommand = argv[1];
+       if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
+               if (!strcmp(subcommand, "-S"))
+                       warn("`-S' has been deprecated; use `tig status' instead");
+               if (argc > 2)
+                       warn("ignoring arguments after `%s'", subcommand);
+               return REQ_VIEW_STATUS;
 
-               if (check_option(opt, 'v', "version", OPT_NONE)) {
-                       printf("tig version %s\n", TIG_VERSION);
-                       return FALSE;
-               }
+       } else if (!strcmp(subcommand, "blame")) {
+               if (argc <= 2 || argc > 4)
+                       die("invalid number of options to blame\n\n%s", usage);
 
-               if (check_option(opt, 'h', "help", OPT_NONE)) {
-                       printf(usage);
-                       return FALSE;
+               i = 2;
+               if (argc == 4) {
+                       string_ncopy(opt_ref, argv[i], strlen(argv[i]));
+                       i++;
                }
 
-               if (!strcmp(opt, "-S")) {
-                       opt_request = REQ_VIEW_STATUS;
-                       continue;
-               }
+               string_ncopy(opt_file, argv[i], strlen(argv[i]));
+               return REQ_VIEW_BLAME;
 
-               if (!strcmp(opt, "-l")) {
-                       opt_request = REQ_VIEW_LOG;
-                       continue;
-               }
+       } else if (!strcmp(subcommand, "show")) {
+               request = REQ_VIEW_DIFF;
 
-               if (!strcmp(opt, "-d")) {
-                       opt_request = REQ_VIEW_DIFF;
-                       continue;
-               }
+       } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
+               request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
+               warn("`tig %s' has been deprecated", subcommand);
 
-               if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
-                       opt_line_number = TRUE;
-                       continue;
-               }
+       } else {
+               subcommand = NULL;
+       }
 
-               if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
-                       opt_tab_size = MIN(opt_tab_size, TABSIZE);
-                       continue;
-               }
+       if (!subcommand)
+               /* XXX: This is vulnerable to the user overriding
+                * options required for the main view parser. */
+               string_copy(opt_cmd, TIG_MAIN_BASE);
+       else
+               string_format(opt_cmd, "git %s", subcommand);
 
-               die("unknown option '%s'\n\n%s", opt, usage);
-       }
+       buf_size = strlen(opt_cmd);
 
-       if (!isatty(STDIN_FILENO)) {
-               opt_request = REQ_VIEW_PAGER;
-               opt_pipe = stdin;
+       for (i = 1 + !!subcommand; i < argc; i++) {
+               char *opt = argv[i];
 
-       } else if (i < argc) {
-               size_t buf_size;
+               if (seen_dashdash || !strcmp(opt, "--")) {
+                       seen_dashdash = TRUE;
 
-               if (opt_request == REQ_VIEW_MAIN)
-                       /* XXX: This is vulnerable to the user overriding
-                        * options required for the main view parser. */
-                       string_copy(opt_cmd, "git log --no-color --pretty=raw --boundary");
-               else
-                       string_copy(opt_cmd, "git");
-               buf_size = strlen(opt_cmd);
+               } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
+                       printf("tig version %s\n", TIG_VERSION);
+                       return REQ_NONE;
 
-               while (buf_size < sizeof(opt_cmd) && i < argc) {
-                       opt_cmd[buf_size++] = ' ';
-                       buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
+               } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
+                       printf("%s\n", usage);
+                       return REQ_NONE;
                }
 
+               opt_cmd[buf_size++] = ' ';
+               buf_size = sq_quote(opt_cmd, buf_size, opt);
                if (buf_size >= sizeof(opt_cmd))
                        die("command too long");
-
-               opt_cmd[buf_size] = 0;
        }
 
-       if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
-               opt_utf8 = FALSE;
+       opt_cmd[buf_size] = 0;
 
-       return TRUE;
+       return request;
 }
 
 
@@ -619,28 +596,35 @@ LINE(ACKED,          "    Acked-by",      COLOR_YELLOW,   COLOR_DEFAULT,  0), \
 LINE(DEFAULT,     "",                  COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(CURSOR,      "",                  COLOR_WHITE,    COLOR_GREEN,    A_BOLD), \
 LINE(STATUS,      "",                  COLOR_GREEN,    COLOR_DEFAULT,  0), \
+LINE(DELIMITER,           "",                  COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
+LINE(DATE,         "",                 COLOR_BLUE,     COLOR_DEFAULT,  0), \
+LINE(LINE_NUMBER,  "",                 COLOR_CYAN,     COLOR_DEFAULT,  0), \
 LINE(TITLE_BLUR,   "",                 COLOR_WHITE,    COLOR_BLUE,     0), \
 LINE(TITLE_FOCUS,  "",                 COLOR_WHITE,    COLOR_BLUE,     A_BOLD), \
-LINE(MAIN_DATE,    "",                 COLOR_BLUE,     COLOR_DEFAULT,  0), \
 LINE(MAIN_AUTHOR,  "",                 COLOR_GREEN,    COLOR_DEFAULT,  0), \
 LINE(MAIN_COMMIT,  "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  0), \
-LINE(MAIN_DELIM,   "",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(MAIN_TAG,     "",                 COLOR_MAGENTA,  COLOR_DEFAULT,  A_BOLD), \
-LINE(MAIN_REMOTE,  "",                 COLOR_YELLOW,   COLOR_DEFAULT,  A_BOLD), \
-LINE(MAIN_REF,     "",                 COLOR_CYAN,     COLOR_DEFAULT,  A_BOLD), \
+LINE(MAIN_LOCAL_TAG,"",                        COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
+LINE(MAIN_REMOTE,  "",                 COLOR_YELLOW,   COLOR_DEFAULT,  0), \
+LINE(MAIN_TRACKED, "",                 COLOR_YELLOW,   COLOR_DEFAULT,  A_BOLD), \
+LINE(MAIN_REF,     "",                 COLOR_CYAN,     COLOR_DEFAULT,  0), \
+LINE(MAIN_HEAD,    "",                 COLOR_CYAN,     COLOR_DEFAULT,  A_BOLD), \
 LINE(MAIN_REVGRAPH,"",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(TREE_DIR,     "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(TREE_FILE,    "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
+LINE(STAT_HEAD,    "",                 COLOR_YELLOW,   COLOR_DEFAULT,  0), \
 LINE(STAT_SECTION, "",                 COLOR_CYAN,     COLOR_DEFAULT,  0), \
 LINE(STAT_NONE,    "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  0), \
 LINE(STAT_STAGED,  "",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
 LINE(STAT_UNSTAGED,"",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
-LINE(STAT_UNTRACKED,"",                        COLOR_MAGENTA,  COLOR_DEFAULT,  0)
+LINE(STAT_UNTRACKED,"",                        COLOR_MAGENTA,  COLOR_DEFAULT,  0), \
+LINE(BLAME_ID,     "",                 COLOR_MAGENTA,  COLOR_DEFAULT,  0)
 
 enum line_type {
 #define LINE(type, line, fg, bg, attr) \
        LINE_##type
-       LINE_INFO
+       LINE_INFO,
+       LINE_NONE
 #undef LINE
 };
 
@@ -682,8 +666,9 @@ get_line_attr(enum line_type type)
 }
 
 static struct line_info *
-get_line_info(char *name, int namelen)
+get_line_info(char *name)
 {
+       size_t namelen = strlen(name);
        enum line_type type;
 
        for (type = 0; type < ARRAY_SIZE(line_info); type++)
@@ -697,15 +682,15 @@ get_line_info(char *name, int namelen)
 static void
 init_colors(void)
 {
-       int default_bg = COLOR_BLACK;
-       int default_fg = COLOR_WHITE;
+       int default_bg = line_info[LINE_DEFAULT].bg;
+       int default_fg = line_info[LINE_DEFAULT].fg;
        enum line_type type;
 
        start_color();
 
-       if (use_default_colors() != ERR) {
-               default_bg = -1;
-               default_fg = -1;
+       if (assume_default_colors(default_fg, default_bg) == ERR) {
+               default_bg = COLOR_BLACK;
+               default_fg = COLOR_WHITE;
        }
 
        for (type = 0; type < ARRAY_SIZE(line_info); type++) {
@@ -722,6 +707,7 @@ struct line {
 
        /* State flags */
        unsigned int selected:1;
+       unsigned int dirty:1;
 
        void *data;             /* User data */
 };
@@ -744,6 +730,7 @@ static struct keybinding default_keybindings[] = {
        { 'l',          REQ_VIEW_LOG },
        { 't',          REQ_VIEW_TREE },
        { 'f',          REQ_VIEW_BLOB },
+       { 'B',          REQ_VIEW_BLAME },
        { 'p',          REQ_VIEW_PAGER },
        { 'h',          REQ_VIEW_HELP },
        { 'S',          REQ_VIEW_STATUS },
@@ -756,6 +743,8 @@ static struct keybinding default_keybindings[] = {
        { KEY_UP,       REQ_PREVIOUS },
        { KEY_DOWN,     REQ_NEXT },
        { 'R',          REQ_REFRESH },
+       { KEY_F(5),     REQ_REFRESH },
+       { 'O',          REQ_MAXIMIZE },
 
        /* Cursor navigation */
        { 'k',          REQ_MOVE_UP },
@@ -786,10 +775,15 @@ static struct keybinding default_keybindings[] = {
        { 'v',          REQ_SHOW_VERSION },
        { 'r',          REQ_SCREEN_REDRAW },
        { '.',          REQ_TOGGLE_LINENO },
+       { 'D',          REQ_TOGGLE_DATE },
+       { 'A',          REQ_TOGGLE_AUTHOR },
        { 'g',          REQ_TOGGLE_REV_GRAPH },
+       { 'F',          REQ_TOGGLE_REFS },
        { ':',          REQ_PROMPT },
        { 'u',          REQ_STATUS_UPDATE },
+       { '!',          REQ_STATUS_CHECKOUT },
        { 'M',          REQ_STATUS_MERGE },
+       { '@',          REQ_STAGE_NEXT },
        { ',',          REQ_TREE_PARENT },
        { 'e',          REQ_EDIT },
 
@@ -804,6 +798,7 @@ static struct keybinding default_keybindings[] = {
        KEYMAP_(LOG), \
        KEYMAP_(TREE), \
        KEYMAP_(BLOB), \
+       KEYMAP_(BLAME), \
        KEYMAP_(PAGER), \
        KEYMAP_(HELP), \
        KEYMAP_(STATUS), \
@@ -974,22 +969,23 @@ static size_t run_requests;
 static enum request
 add_run_request(enum keymap keymap, int key, int argc, char **argv)
 {
-       struct run_request *tmp;
-       struct run_request req = { keymap, key };
+       struct run_request *req;
+       char cmd[SIZEOF_STR];
        size_t bufpos;
 
        for (bufpos = 0; argc > 0; argc--, argv++)
-               if (!string_format_from(req.cmd, &bufpos, "%s ", *argv))
+               if (!string_format_from(cmd, &bufpos, "%s ", *argv))
                        return REQ_NONE;
 
-       req.cmd[bufpos - 1] = 0;
-
-       tmp = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
-       if (!tmp)
+       req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
+       if (!req)
                return REQ_NONE;
 
-       run_request = tmp;
-       run_request[run_requests++] = req;
+       run_request = req;
+       req = &run_request[run_requests++];
+       string_copy(req->cmd, cmd);
+       req->keymap = keymap;
+       req->key = key;
 
        return REQ_NONE + run_requests;
 }
@@ -1073,10 +1069,18 @@ option_color_command(int argc, char *argv[])
                return ERR;
        }
 
-       info = get_line_info(argv[0], strlen(argv[0]));
+       info = get_line_info(argv[0]);
        if (!info) {
-               config_msg = "Unknown color name";
-               return ERR;
+               if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
+                       info = get_line_info("delimiter");
+
+               } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
+                       info = get_line_info("date");
+
+               } else {
+                       config_msg = "Unknown color name";
+                       return ERR;
+               }
        }
 
        if (set_color(&info->fg, argv[1]) == ERR ||
@@ -1093,6 +1097,20 @@ option_color_command(int argc, char *argv[])
        return OK;
 }
 
+static bool parse_bool(const char *s)
+{
+       return (!strcmp(s, "1") || !strcmp(s, "true") ||
+               !strcmp(s, "yes")) ? TRUE : FALSE;
+}
+
+static int
+parse_int(const char *s, int default_value, int min, int max)
+{
+       int value = atoi(s);
+
+       return (value < min || value > max) ? default_value : value;
+}
+
 /* Wants: name = value */
 static int
 option_set_command(int argc, char *argv[])
@@ -1107,20 +1125,48 @@ option_set_command(int argc, char *argv[])
                return ERR;
        }
 
+       if (!strcmp(argv[0], "show-author")) {
+               opt_author = parse_bool(argv[2]);
+               return OK;
+       }
+
+       if (!strcmp(argv[0], "show-date")) {
+               opt_date = parse_bool(argv[2]);
+               return OK;
+       }
+
        if (!strcmp(argv[0], "show-rev-graph")) {
-               opt_rev_graph = (!strcmp(argv[2], "1") ||
-                                !strcmp(argv[2], "true") ||
-                                !strcmp(argv[2], "yes"));
+               opt_rev_graph = parse_bool(argv[2]);
+               return OK;
+       }
+
+       if (!strcmp(argv[0], "show-refs")) {
+               opt_show_refs = parse_bool(argv[2]);
+               return OK;
+       }
+
+       if (!strcmp(argv[0], "show-line-numbers")) {
+               opt_line_number = parse_bool(argv[2]);
+               return OK;
+       }
+
+       if (!strcmp(argv[0], "line-graphics")) {
+               opt_line_graphics = parse_bool(argv[2]);
                return OK;
        }
 
        if (!strcmp(argv[0], "line-number-interval")) {
-               opt_num_interval = atoi(argv[2]);
+               opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
+               return OK;
+       }
+
+       if (!strcmp(argv[0], "author-width")) {
+               opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
                return OK;
        }
 
        if (!strcmp(argv[0], "tab-size")) {
-               opt_tab_size = atoi(argv[2]);
+               opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
                return OK;
        }
 
@@ -1271,29 +1317,47 @@ read_option(char *opt, size_t optlen, char *value, size_t valuelen)
        return OK;
 }
 
-static int
-load_options(void)
+static void
+load_option_file(const char *path)
 {
-       char *home = getenv("HOME");
-       char buf[SIZEOF_STR];
        FILE *file;
 
+       /* It's ok that the file doesn't exist. */
+       file = fopen(path, "r");
+       if (!file)
+               return;
+
        config_lineno = 0;
        config_errors = FALSE;
 
-       add_builtin_run_requests();
+       if (read_properties(file, " \t", read_option) == ERR ||
+           config_errors == TRUE)
+               fprintf(stderr, "Errors while loading %s.\n", path);
+}
 
-       if (!home || !string_format(buf, "%s/.tigrc", home))
-               return ERR;
+static int
+load_options(void)
+{
+       char *home = getenv("HOME");
+       char *tigrc_user = getenv("TIGRC_USER");
+       char *tigrc_system = getenv("TIGRC_SYSTEM");
+       char buf[SIZEOF_STR];
 
-       /* It's ok that the file doesn't exist. */
-       file = fopen(buf, "r");
-       if (!file)
-               return OK;
+       add_builtin_run_requests();
 
-       if (read_properties(file, " \t", read_option) == ERR ||
-           config_errors == TRUE)
-               fprintf(stderr, "Errors while loading %s.\n", buf);
+       if (!tigrc_system) {
+               if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
+                       return ERR;
+               tigrc_system = buf;
+       }
+       load_option_file(tigrc_system);
+
+       if (!tigrc_user) {
+               if (!home || !string_format(buf, "%s/.tigrc", home))
+                       return ERR;
+               tigrc_user = buf;
+       }
+       load_option_file(tigrc_user);
 
        return OK;
 }
@@ -1332,6 +1396,7 @@ struct view {
        struct view_ops *ops;   /* View operations */
 
        enum keymap keymap;     /* What keymap does this view have */
+       bool git_dir;           /* Whether the view requires a git directory. */
 
        char cmd[SIZEOF_STR];   /* Command buffer */
        char ref[SIZEOF_REF];   /* Hovered commit reference */
@@ -1354,11 +1419,17 @@ struct view {
        struct view *parent;
 
        /* Buffering */
-       unsigned long lines;    /* Total number of lines */
+       size_t lines;           /* Total number of lines */
        struct line *line;      /* Line index */
-       unsigned long line_size;/* Total number of allocated lines */
+       size_t line_alloc;      /* Total number of allocated lines */
+       size_t line_size;       /* Total number of used lines */
        unsigned int digits;    /* Number of digits in the lines member. */
 
+       /* Drawing */
+       struct line *curline;   /* Line currently being drawn. */
+       enum line_type curtype; /* Attribute currently used for drawing. */
+       unsigned long col;      /* Column when drawing. */
+
        /* Loading */
        FILE *pipe;
        time_t start_time;
@@ -1372,7 +1443,7 @@ struct view_ops {
        /* Read one line; updates view->line. */
        bool (*read)(struct view *view, char *data);
        /* Draw one line; @lineno must be < view->height. */
-       bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
+       bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
        /* Depending on view handle a special requests. */
        enum request (*request)(struct view *view, enum request request, struct line *line);
        /* Search for regex in a line. */
@@ -1385,30 +1456,33 @@ static struct view_ops pager_ops;
 static struct view_ops main_ops;
 static struct view_ops tree_ops;
 static struct view_ops blob_ops;
+static struct view_ops blame_ops;
 static struct view_ops help_ops;
 static struct view_ops status_ops;
 static struct view_ops stage_ops;
 
-#define VIEW_STR(name, cmd, env, ref, ops, map) \
-       { name, cmd, #env, ref, ops, map}
+#define VIEW_STR(name, cmd, env, ref, ops, map, git) \
+       { name, cmd, #env, ref, ops, map, git }
 
-#define VIEW_(id, name, ops, ref) \
-       VIEW_STR(name, TIG_##id##_CMD,  TIG_##id##_CMD, ref, ops, KEYMAP_##id)
+#define VIEW_(id, name, ops, git, ref) \
+       VIEW_STR(name, TIG_##id##_CMD,  TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
 
 
 static struct view views[] = {
-       VIEW_(MAIN,   "main",   &main_ops,   ref_head),
-       VIEW_(DIFF,   "diff",   &pager_ops,  ref_commit),
-       VIEW_(LOG,    "log",    &pager_ops,  ref_head),
-       VIEW_(TREE,   "tree",   &tree_ops,   ref_commit),
-       VIEW_(BLOB,   "blob",   &blob_ops,   ref_blob),
-       VIEW_(HELP,   "help",   &help_ops,   ""),
-       VIEW_(PAGER,  "pager",  &pager_ops,  "stdin"),
-       VIEW_(STATUS, "status", &status_ops, ""),
-       VIEW_(STAGE,  "stage",  &stage_ops,  ""),
+       VIEW_(MAIN,   "main",   &main_ops,   TRUE,  ref_head),
+       VIEW_(DIFF,   "diff",   &pager_ops,  TRUE,  ref_commit),
+       VIEW_(LOG,    "log",    &pager_ops,  TRUE,  ref_head),
+       VIEW_(TREE,   "tree",   &tree_ops,   TRUE,  ref_commit),
+       VIEW_(BLOB,   "blob",   &blob_ops,   TRUE,  ref_blob),
+       VIEW_(BLAME,  "blame",  &blame_ops,  TRUE,  ref_commit),
+       VIEW_(HELP,   "help",   &help_ops,   FALSE, ""),
+       VIEW_(PAGER,  "pager",  &pager_ops,  FALSE, "stdin"),
+       VIEW_(STATUS, "status", &status_ops, TRUE,  ""),
+       VIEW_(STAGE,  "stage",  &stage_ops,  TRUE,  ""),
 };
 
-#define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
+#define VIEW(req)      (&views[(req) - REQ_OFFSET - 1])
+#define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
 
 #define foreach_view(view, i) \
        for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
@@ -1416,6 +1490,177 @@ static struct view views[] = {
 #define view_is_displayed(view) \
        (view == display[0] || view == display[1])
 
+
+enum line_graphic {
+       LINE_GRAPHIC_VLINE
+};
+
+static int line_graphics[] = {
+       /* LINE_GRAPHIC_VLINE: */ '|'
+};
+
+static inline void
+set_view_attr(struct view *view, enum line_type type)
+{
+       if (!view->curline->selected && view->curtype != type) {
+               wattrset(view->win, get_line_attr(type));
+               wchgat(view->win, -1, 0, type, NULL);
+               view->curtype = type;
+       }
+}
+
+static int
+draw_chars(struct view *view, enum line_type type, const char *string,
+          int max_len, bool use_tilde)
+{
+       int len = 0;
+       int col = 0;
+       int trimmed = FALSE;
+
+       if (max_len <= 0)
+               return 0;
+
+       if (opt_utf8) {
+               len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
+       } else {
+               col = len = strlen(string);
+               if (len > max_len) {
+                       if (use_tilde) {
+                               max_len -= 1;
+                       }
+                       col = len = max_len;
+                       trimmed = TRUE;
+               }
+       }
+
+       set_view_attr(view, type);
+       waddnstr(view->win, string, len);
+       if (trimmed && use_tilde) {
+               set_view_attr(view, LINE_DELIMITER);
+               waddch(view->win, '~');
+               col++;
+       }
+
+       return col;
+}
+
+static int
+draw_space(struct view *view, enum line_type type, int max, int spaces)
+{
+       static char space[] = "                    ";
+       int col = 0;
+
+       spaces = MIN(max, spaces);
+
+       while (spaces > 0) {
+               int len = MIN(spaces, sizeof(space) - 1);
+
+               col += draw_chars(view, type, space, spaces, FALSE);
+               spaces -= len;
+       }
+
+       return col;
+}
+
+static bool
+draw_lineno(struct view *view, unsigned int lineno)
+{
+       char number[10];
+       int digits3 = view->digits < 3 ? 3 : view->digits;
+       int max_number = MIN(digits3, STRING_SIZE(number));
+       int max = view->width - view->col;
+       int col;
+
+       if (max < max_number)
+               max_number = max;
+
+       lineno += view->offset + 1;
+       if (lineno == 1 || (lineno % opt_num_interval) == 0) {
+               static char fmt[] = "%1ld";
+
+               if (view->digits <= 9)
+                       fmt[1] = '0' + digits3;
+
+               if (!string_format(number, fmt, lineno))
+                       number[0] = 0;
+               col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
+       } else {
+               col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
+       }
+
+       if (col < max) {
+               set_view_attr(view, LINE_DEFAULT);
+               waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
+               col++;
+       }
+
+       if (col < max)
+               col += draw_space(view, LINE_DEFAULT, max - col, 1);
+       view->col += col;
+
+       return view->width - view->col <= 0;
+}
+
+static bool
+draw_text(struct view *view, enum line_type type, const char *string, bool trim)
+{
+       view->col += draw_chars(view, type, string, view->width - view->col, trim);
+       return view->width - view->col <= 0;
+}
+
+static bool
+draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
+{
+       int max = view->width - view->col;
+       int i;
+
+       if (max < size)
+               size = max;
+
+       set_view_attr(view, type);
+       /* Using waddch() instead of waddnstr() ensures that
+        * they'll be rendered correctly for the cursor line. */
+       for (i = 0; i < size; i++)
+               waddch(view->win, graphic[i]);
+
+       view->col += size;
+       if (size < max) {
+               waddch(view->win, ' ');
+               view->col++;
+       }
+
+       return view->width - view->col <= 0;
+}
+
+static bool
+draw_field(struct view *view, enum line_type type, char *text, int len, bool trim)
+{
+       int max = MIN(view->width - view->col, len);
+       int col;
+
+       if (text)
+               col = draw_chars(view, type, text, max - 1, trim);
+       else
+               col = draw_space(view, type, max - 1, max - 1);
+
+       view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
+       return view->width - view->col <= 0;
+}
+
+static bool
+draw_date(struct view *view, struct tm *time)
+{
+       char buf[DATE_COLS];
+       char *date;
+       int timelen = 0;
+
+       if (time)
+               timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
+       date = timelen ? buf : NULL;
+
+       return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
+}
+
 static bool
 draw_view_line(struct view *view, unsigned int lineno)
 {
@@ -1430,22 +1675,53 @@ draw_view_line(struct view *view, unsigned int lineno)
 
        line = &view->line[view->offset + lineno];
 
+       wmove(view->win, lineno, 0);
+       view->col = 0;
+       view->curline = line;
+       view->curtype = LINE_NONE;
+       line->selected = FALSE;
+
        if (selected) {
+               set_view_attr(view, LINE_CURSOR);
                line->selected = TRUE;
                view->ops->select(view, line);
        } else if (line->selected) {
-               line->selected = FALSE;
-               wmove(view->win, lineno, 0);
                wclrtoeol(view->win);
        }
 
        scrollok(view->win, FALSE);
-       draw_ok = view->ops->draw(view, line, lineno, selected);
+       draw_ok = view->ops->draw(view, line, lineno);
        scrollok(view->win, TRUE);
 
        return draw_ok;
 }
 
+static void
+redraw_view_dirty(struct view *view)
+{
+       bool dirty = FALSE;
+       int lineno;
+
+       for (lineno = 0; lineno < view->height; lineno++) {
+               struct line *line = &view->line[view->offset + lineno];
+
+               if (!line->dirty)
+                       continue;
+               line->dirty = 0;
+               dirty = TRUE;
+               if (!draw_view_line(view, lineno))
+                       break;
+       }
+
+       if (!dirty)
+               return;
+       redrawwin(view->win);
+       if (input_mode)
+               wnoutrefresh(view->win);
+       else
+               wrefresh(view->win);
+}
+
 static void
 redraw_view_from(struct view *view, int lineno)
 {
@@ -1903,10 +2179,13 @@ search_view(struct view *view, enum request request)
  */
 
 static void
-end_update(struct view *view)
+end_update(struct view *view, bool force)
 {
        if (!view->pipe)
                return;
+       while (!view->ops->read(view, NULL))
+               if (!force)
+                       return;
        set_nonblocking_input(FALSE);
        if (view->pipe == stdin)
                fclose(view->pipe);
@@ -1918,9 +2197,6 @@ end_update(struct view *view)
 static bool
 begin_update(struct view *view)
 {
-       if (view->pipe)
-               end_update(view);
-
        if (opt_cmd[0]) {
                string_copy(view->cmd, opt_cmd);
                opt_cmd[0] = 0;
@@ -1992,15 +2268,33 @@ begin_update(struct view *view)
        return TRUE;
 }
 
+#define ITEM_CHUNK_SIZE 256
+static void *
+realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
+{
+       size_t num_chunks = *size / ITEM_CHUNK_SIZE;
+       size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
+
+       if (mem == NULL || num_chunks != num_chunks_new) {
+               *size = num_chunks_new * ITEM_CHUNK_SIZE;
+               mem = realloc(mem, *size * item_size);
+       }
+
+       return mem;
+}
+
 static struct line *
 realloc_lines(struct view *view, size_t line_size)
 {
-       struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
+       size_t alloc = view->line_alloc;
+       struct line *tmp = realloc_items(view->line, &alloc, line_size,
+                                        sizeof(*view->line));
 
        if (!tmp)
                return NULL;
 
        view->line = tmp;
+       view->line_alloc = alloc;
        view->line_size = line_size;
        return view->line;
 }
@@ -2096,28 +2390,28 @@ update_view(struct view *view)
                redraw_view_from(view, redraw_from);
        }
 
+       if (view == VIEW(REQ_VIEW_BLAME))
+               redraw_view_dirty(view);
+
        /* Update the title _after_ the redraw so that if the redraw picks up a
         * commit reference in view->ref it'll be available here. */
        update_view_title(view);
 
 check_pipe:
-       if (ferror(view->pipe)) {
+       if (ferror(view->pipe) && errno != 0) {
                report("Failed to read: %s", strerror(errno));
-               goto end;
+               end_update(view, TRUE);
 
        } else if (feof(view->pipe)) {
                report("");
-               goto end;
+               end_update(view, FALSE);
        }
 
        return TRUE;
 
 alloc_error:
        report("Allocation failure");
-
-end:
-       view->ops->read(view, NULL);
-       end_update(view);
+       end_update(view, TRUE);
        return FALSE;
 }
 
@@ -2152,6 +2446,7 @@ enum open_flags {
        OPEN_SPLIT = 1,         /* Split current view. */
        OPEN_BACKGROUNDED = 2,  /* Backgrounded. */
        OPEN_RELOAD = 4,        /* Reload view even if it is the current. */
+       OPEN_NOMAXIMIZE = 8     /* Do not maximize the current view. */
 };
 
 static void
@@ -2160,6 +2455,7 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
        bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
        bool split = !!(flags & OPEN_SPLIT);
        bool reload = !!(flags & OPEN_RELOAD);
+       bool nomaximize = !!(flags & OPEN_NOMAXIMIZE);
        struct view *view = VIEW(request);
        int nviews = displayed_views();
        struct view *base_view = display[0];
@@ -2169,23 +2465,16 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
                return;
        }
 
-       if (view->ops->open) {
-               if (!view->ops->open(view)) {
-                       report("Failed to load %s view", view->name);
-                       return;
-               }
-
-       } else if ((reload || strcmp(view->vid, view->id)) &&
-                  !begin_update(view)) {
-               report("Failed to load %s view", view->name);
-               return;
-       }
+       if (view->git_dir && !opt_git_dir[0]) {
+               report("The %s view is disabled in pager view", view->name);
+               return;
+       }
 
        if (split) {
                display[1] = view;
                if (!backgrounded)
                        current_view = 1;
-       } else {
+       } else if (!nomaximize) {
                /* Maximize the current view. */
                memset(display, 0, sizeof(display));
                current_view = 0;
@@ -2198,6 +2487,21 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
            (nviews == 1 && base_view != display[0]))
                resize_display();
 
+       if (view->pipe)
+               end_update(view, TRUE);
+
+       if (view->ops->open) {
+               if (!view->ops->open(view)) {
+                       report("Failed to load %s view", view->name);
+                       return;
+               }
+
+       } else if ((reload || strcmp(view->vid, view->id)) &&
+                  !begin_update(view)) {
+               report("Failed to load %s view", view->name);
+               return;
+       }
+
        if (split && prev->lineno - prev->offset >= prev->height) {
                /* Take the title line into account. */
                int lines = prev->lineno - prev->offset - prev->height + 1;
@@ -2219,7 +2523,7 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
        if (view->pipe && view->lines == 0) {
                /* Clear the old view and let the incremental updating refill
                 * the screen. */
-               wclear(view->win);
+               werase(view->win);
                report("");
        } else {
                redraw_view(view);
@@ -2232,6 +2536,14 @@ open_view(struct view *prev, enum request request, enum open_flags flags)
                update_view_title(view);
 }
 
+static void
+run_confirm(const char *cmd, const char *prompt)
+{
+       if (prompt_yesno(prompt)) {
+               system(cmd);
+       }
+}
+
 static void
 open_external_viewer(const char *cmd)
 {
@@ -2346,7 +2658,13 @@ view_driver(struct view *view, enum request request)
 
        if (request > REQ_NONE) {
                open_run_request(request);
-               return TRUE;
+               /* FIXME: When all views can refresh always do this. */
+               if (view == VIEW(REQ_VIEW_STATUS) ||
+                   view == VIEW(REQ_VIEW_MAIN) ||
+                   view == VIEW(REQ_VIEW_STAGE))
+                       request = REQ_REFRESH;
+               else
+                       return TRUE;
        }
 
        if (view && view->lines) {
@@ -2372,6 +2690,15 @@ view_driver(struct view *view, enum request request)
                scroll_view(view, request);
                break;
 
+       case REQ_VIEW_BLAME:
+               if (!opt_file[0]) {
+                       report("No file chosen, press %s to open tree view",
+                              get_key(REQ_VIEW_TREE));
+                       break;
+               }
+               open_view(view, request, OPEN_DEFAULT);
+               break;
+
        case REQ_VIEW_BLOB:
                if (!ref_blob[0]) {
                        report("No file chosen, press %s to open tree view",
@@ -2421,6 +2748,8 @@ view_driver(struct view *view, enum request request)
 
                if ((view == VIEW(REQ_VIEW_DIFF) &&
                     view->parent == VIEW(REQ_VIEW_MAIN)) ||
+                  (view == VIEW(REQ_VIEW_DIFF) &&
+                    view->parent == VIEW(REQ_VIEW_BLAME)) ||
                   (view == VIEW(REQ_VIEW_STAGE) &&
                     view->parent == VIEW(REQ_VIEW_STATUS)) ||
                   (view == VIEW(REQ_VIEW_BLOB) &&
@@ -2461,19 +2790,34 @@ view_driver(struct view *view, enum request request)
                report("Refreshing is not yet supported for the %s view", view->name);
                break;
 
+       case REQ_MAXIMIZE:
+               if (displayed_views() == 2)
+                       open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
+               break;
+
        case REQ_TOGGLE_LINENO:
                opt_line_number = !opt_line_number;
                redraw_display();
                break;
 
+       case REQ_TOGGLE_DATE:
+               opt_date = !opt_date;
+               redraw_display();
+               break;
+
+       case REQ_TOGGLE_AUTHOR:
+               opt_author = !opt_author;
+               redraw_display();
+               break;
+
        case REQ_TOGGLE_REV_GRAPH:
                opt_rev_graph = !opt_rev_graph;
                redraw_display();
                break;
 
-       case REQ_PROMPT:
-               /* Always reload^Wrerun commands from the prompt. */
-               open_view(view, opt_request, OPEN_RELOAD);
+       case REQ_TOGGLE_REFS:
+               opt_show_refs = !opt_show_refs;
+               redraw_display();
                break;
 
        case REQ_SEARCH:
@@ -2491,7 +2835,7 @@ view_driver(struct view *view, enum request request)
                        view = &views[i];
                        if (view->pipe)
                                report("Stopped loading the %s view", view->name),
-                       end_update(view);
+                       end_update(view, TRUE);
                }
                break;
 
@@ -2510,12 +2854,10 @@ view_driver(struct view *view, enum request request)
                report("Nothing to edit");
                break;
 
-
        case REQ_ENTER:
                report("Nothing to enter");
                break;
 
-
        case REQ_VIEW_CLOSE:
                /* XXX: Mark closed views by letting view->parent point to the
                 * view itself. Parents to closed view should never be
@@ -2549,72 +2891,14 @@ view_driver(struct view *view, enum request request)
  */
 
 static bool
-pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
+pager_draw(struct view *view, struct line *line, unsigned int lineno)
 {
        char *text = line->data;
-       enum line_type type = line->type;
-       int textlen = strlen(text);
-       int attr;
-
-       wmove(view->win, lineno, 0);
-
-       if (selected) {
-               type = LINE_CURSOR;
-               wchgat(view->win, -1, 0, type, NULL);
-       }
-
-       attr = get_line_attr(type);
-       wattrset(view->win, attr);
-
-       if (opt_line_number || opt_tab_size < TABSIZE) {
-               static char spaces[] = "                    ";
-               int col_offset = 0, col = 0;
-
-               if (opt_line_number) {
-                       unsigned long real_lineno = view->offset + lineno + 1;
-
-                       if (real_lineno == 1 ||
-                           (real_lineno % opt_num_interval) == 0) {
-                               wprintw(view->win, "%.*d", view->digits, real_lineno);
-
-                       } else {
-                               waddnstr(view->win, spaces,
-                                        MIN(view->digits, STRING_SIZE(spaces)));
-                       }
-                       waddstr(view->win, ": ");
-                       col_offset = view->digits + 2;
-               }
-
-               while (text && col_offset + col < view->width) {
-                       int cols_max = view->width - col_offset - col;
-                       char *pos = text;
-                       int cols;
-
-                       if (*text == '\t') {
-                               text++;
-                               assert(sizeof(spaces) > TABSIZE);
-                               pos = spaces;
-                               cols = opt_tab_size - (col % opt_tab_size);
-
-                       } else {
-                               text = strchr(text, '\t');
-                               cols = line ? text - pos : strlen(pos);
-                       }
-
-                       waddnstr(view->win, pos, MIN(cols, cols_max));
-                       col += cols;
-               }
-
-       } else {
-               int col = 0, pos = 0;
-
-               for (; pos < textlen && col < view->width; pos++, col++)
-                       if (text[pos] == '\t')
-                               col += TABSIZE - (col % TABSIZE) - 1;
 
-               waddnstr(view->win, text, pos);
-       }
+       if (opt_line_number && draw_lineno(view, lineno))
+               return TRUE;
 
+       draw_text(view, line->type, text, TRUE);
        return TRUE;
 }
 
@@ -2650,7 +2934,7 @@ static void
 add_pager_refs(struct view *view, struct line *line)
 {
        char buf[SIZEOF_STR];
-       char *commit_id = line->data + STRING_SIZE("commit ");
+       char *commit_id = (char *)line->data + STRING_SIZE("commit ");
        struct ref **refs;
        size_t bufpos = 0, refpos = 0;
        const char *sep = "Refs: ";
@@ -2761,7 +3045,7 @@ static void
 pager_select(struct view *view, struct line *line)
 {
        if (line->type == LINE_COMMIT) {
-               char *text = line->data + STRING_SIZE("commit ");
+               char *text = (char *)line->data + STRING_SIZE("commit ");
 
                if (view != VIEW(REQ_VIEW_PAGER))
                        string_copy_rev(view->ref, text);
@@ -2940,6 +3224,14 @@ tree_compare_entry(enum line_type type1, char *name1,
        return strcmp(name1, name2);
 }
 
+static char *
+tree_path(struct line *line)
+{
+       char *path = line->data;
+
+       return path + SIZEOF_TREE_ATTR;
+}
+
 static bool
 tree_read(struct view *view, char *text)
 {
@@ -2949,6 +3241,8 @@ tree_read(struct view *view, char *text)
        enum line_type type;
        bool first_read = view->lines == 0;
 
+       if (!text)
+               return TRUE;
        if (textlen <= SIZEOF_TREE_ATTR)
                return FALSE;
 
@@ -2985,7 +3279,7 @@ tree_read(struct view *view, char *text)
        /* Skip "Directory ..." and ".." line. */
        for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
                struct line *line = &view->line[pos];
-               char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
+               char *path1 = tree_path(line);
                char *path2 = text + SIZEOF_TREE_ATTR;
                int cmp = tree_compare_entry(line->type, path1, type, path2);
 
@@ -3023,6 +3317,18 @@ tree_request(struct view *view, enum request request, struct line *line)
 {
        enum open_flags flags;
 
+       if (request == REQ_VIEW_BLAME) {
+               char *filename = tree_path(line);
+
+               if (line->type == LINE_TREE_DIR) {
+                       report("Cannot show blame for directory %s", opt_path);
+                       return REQ_NONE;
+               }
+
+               string_copy(opt_ref, view->vid);
+               string_format(opt_file, "%s%s", opt_path, filename);
+               return request;
+       }
        if (request == REQ_TREE_PARENT) {
                if (*opt_path) {
                        /* fake 'cd  ..' */
@@ -3048,8 +3354,7 @@ tree_request(struct view *view, enum request request, struct line *line)
                        pop_tree_stack_entry();
 
                } else {
-                       char *data = line->data;
-                       char *basename = data + SIZEOF_TREE_ATTR;
+                       char *basename = tree_path(line);
 
                        push_tree_stack_entry(basename, view->lineno);
                }
@@ -3080,7 +3385,7 @@ tree_request(struct view *view, enum request request, struct line *line)
 static void
 tree_select(struct view *view, struct line *line)
 {
-       char *text = line->data + STRING_SIZE("100644 blob ");
+       char *text = (char *)line->data + STRING_SIZE("100644 blob ");
 
        if (line->type == LINE_TREE_FILE) {
                string_copy_rev(ref_blob, text);
@@ -3105,6 +3410,8 @@ static struct view_ops tree_ops = {
 static bool
 blob_read(struct view *view, char *line)
 {
+       if (!line)
+               return TRUE;
        return add_line_text(view, line, LINE_DEFAULT) != NULL;
 }
 
@@ -3118,6 +3425,372 @@ static struct view_ops blob_ops = {
        pager_select,
 };
 
+/*
+ * Blame backend
+ *
+ * Loading the blame view is a two phase job:
+ *
+ *  1. File content is read either using opt_file from the
+ *     filesystem or using git-cat-file.
+ *  2. Then blame information is incrementally added by
+ *     reading output from git-blame.
+ */
+
+struct blame_commit {
+       char id[SIZEOF_REV];            /* SHA1 ID. */
+       char title[128];                /* First line of the commit message. */
+       char author[75];                /* Author of the commit. */
+       struct tm time;                 /* Date from the author ident. */
+       char filename[128];             /* Name of file. */
+};
+
+struct blame {
+       struct blame_commit *commit;
+       unsigned int header:1;
+       char text[1];
+};
+
+#define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
+#define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
+
+static bool
+blame_open(struct view *view)
+{
+       char path[SIZEOF_STR];
+       char ref[SIZEOF_STR] = "";
+
+       if (sq_quote(path, 0, opt_file) >= sizeof(path))
+               return FALSE;
+
+       if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
+               return FALSE;
+
+       if (*opt_ref) {
+               if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
+                       return FALSE;
+       } else {
+               view->pipe = fopen(opt_file, "r");
+               if (!view->pipe &&
+                   !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
+                       return FALSE;
+       }
+
+       if (!view->pipe)
+               view->pipe = popen(view->cmd, "r");
+       if (!view->pipe)
+               return FALSE;
+
+       if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
+               return FALSE;
+
+       string_format(view->ref, "%s ...", opt_file);
+       string_copy_rev(view->vid, opt_file);
+       set_nonblocking_input(TRUE);
+
+       if (view->line) {
+               int i;
+
+               for (i = 0; i < view->lines; i++)
+                       free(view->line[i].data);
+               free(view->line);
+       }
+
+       view->lines = view->line_alloc = view->line_size = view->lineno = 0;
+       view->offset = view->lines  = view->lineno = 0;
+       view->line = NULL;
+       view->start_time = time(NULL);
+
+       return TRUE;
+}
+
+static struct blame_commit *
+get_blame_commit(struct view *view, const char *id)
+{
+       size_t i;
+
+       for (i = 0; i < view->lines; i++) {
+               struct blame *blame = view->line[i].data;
+
+               if (!blame->commit)
+                       continue;
+
+               if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
+                       return blame->commit;
+       }
+
+       {
+               struct blame_commit *commit = calloc(1, sizeof(*commit));
+
+               if (commit)
+                       string_ncopy(commit->id, id, SIZEOF_REV);
+               return commit;
+       }
+}
+
+static bool
+parse_number(char **posref, size_t *number, size_t min, size_t max)
+{
+       char *pos = *posref;
+
+       *posref = NULL;
+       pos = strchr(pos + 1, ' ');
+       if (!pos || !isdigit(pos[1]))
+               return FALSE;
+       *number = atoi(pos + 1);
+       if (*number < min || *number > max)
+               return FALSE;
+
+       *posref = pos;
+       return TRUE;
+}
+
+static struct blame_commit *
+parse_blame_commit(struct view *view, char *text, int *blamed)
+{
+       struct blame_commit *commit;
+       struct blame *blame;
+       char *pos = text + SIZEOF_REV - 1;
+       size_t lineno;
+       size_t group;
+
+       if (strlen(text) <= SIZEOF_REV || *pos != ' ')
+               return NULL;
+
+       if (!parse_number(&pos, &lineno, 1, view->lines) ||
+           !parse_number(&pos, &group, 1, view->lines - lineno + 1))
+               return NULL;
+
+       commit = get_blame_commit(view, text);
+       if (!commit)
+               return NULL;
+
+       *blamed += group;
+       while (group--) {
+               struct line *line = &view->line[lineno + group - 1];
+
+               blame = line->data;
+               blame->commit = commit;
+               blame->header = !group;
+               line->dirty = 1;
+       }
+
+       return commit;
+}
+
+static bool
+blame_read_file(struct view *view, char *line)
+{
+       if (!line) {
+               FILE *pipe = NULL;
+
+               if (view->lines > 0)
+                       pipe = popen(view->cmd, "r");
+               else if (!view->parent)
+                       die("No blame exist for %s", view->vid);
+               view->cmd[0] = 0;
+               if (!pipe) {
+                       report("Failed to load blame data");
+                       return TRUE;
+               }
+
+               fclose(view->pipe);
+               view->pipe = pipe;
+               return FALSE;
+
+       } else {
+               size_t linelen = strlen(line);
+               struct blame *blame = malloc(sizeof(*blame) + linelen);
+
+               blame->commit = NULL;
+               strncpy(blame->text, line, linelen);
+               blame->text[linelen] = 0;
+               return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
+       }
+}
+
+static bool
+match_blame_header(const char *name, char **line)
+{
+       size_t namelen = strlen(name);
+       bool matched = !strncmp(name, *line, namelen);
+
+       if (matched)
+               *line += namelen;
+
+       return matched;
+}
+
+static bool
+blame_read(struct view *view, char *line)
+{
+       static struct blame_commit *commit = NULL;
+       static int blamed = 0;
+       static time_t author_time;
+
+       if (*view->cmd)
+               return blame_read_file(view, line);
+
+       if (!line) {
+               /* Reset all! */
+               commit = NULL;
+               blamed = 0;
+               string_format(view->ref, "%s", view->vid);
+               if (view_is_displayed(view)) {
+                       update_view_title(view);
+                       redraw_view_from(view, 0);
+               }
+               return TRUE;
+       }
+
+       if (!commit) {
+               commit = parse_blame_commit(view, line, &blamed);
+               string_format(view->ref, "%s %2d%%", view->vid,
+                             blamed * 100 / view->lines);
+
+       } else if (match_blame_header("author ", &line)) {
+               string_ncopy(commit->author, line, strlen(line));
+
+       } else if (match_blame_header("author-time ", &line)) {
+               author_time = (time_t) atol(line);
+
+       } else if (match_blame_header("author-tz ", &line)) {
+               long tz;
+
+               tz  = ('0' - line[1]) * 60 * 60 * 10;
+               tz += ('0' - line[2]) * 60 * 60;
+               tz += ('0' - line[3]) * 60;
+               tz += ('0' - line[4]) * 60;
+
+               if (line[0] == '-')
+                       tz = -tz;
+
+               author_time -= tz;
+               gmtime_r(&author_time, &commit->time);
+
+       } else if (match_blame_header("summary ", &line)) {
+               string_ncopy(commit->title, line, strlen(line));
+
+       } else if (match_blame_header("filename ", &line)) {
+               string_ncopy(commit->filename, line, strlen(line));
+               commit = NULL;
+       }
+
+       return TRUE;
+}
+
+static bool
+blame_draw(struct view *view, struct line *line, unsigned int lineno)
+{
+       struct blame *blame = line->data;
+       struct tm *time = NULL;
+       char *id = NULL, *author = NULL;
+
+       if (blame->commit && *blame->commit->filename) {
+               id = blame->commit->id;
+               author = blame->commit->author;
+               time = &blame->commit->time;
+       }
+
+       if (opt_date && draw_date(view, time))
+               return TRUE;
+
+       if (opt_author &&
+           draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
+               return TRUE;
+
+       if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
+               return TRUE;
+
+       if (draw_lineno(view, lineno))
+               return TRUE;
+
+       draw_text(view, LINE_DEFAULT, blame->text, TRUE);
+       return TRUE;
+}
+
+static enum request
+blame_request(struct view *view, enum request request, struct line *line)
+{
+       enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
+       struct blame *blame = line->data;
+
+       switch (request) {
+       case REQ_ENTER:
+               if (!blame->commit) {
+                       report("No commit loaded yet");
+                       break;
+               }
+
+               if (!strcmp(blame->commit->id, NULL_ID)) {
+                       char path[SIZEOF_STR];
+
+                       if (sq_quote(path, 0, view->vid) >= sizeof(path))
+                               break;
+                       string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
+               }
+
+               open_view(view, REQ_VIEW_DIFF, flags);
+               break;
+
+       default:
+               return request;
+       }
+
+       return REQ_NONE;
+}
+
+static bool
+blame_grep(struct view *view, struct line *line)
+{
+       struct blame *blame = line->data;
+       struct blame_commit *commit = blame->commit;
+       regmatch_t pmatch;
+
+#define MATCH(text, on)                                                        \
+       (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
+
+       if (commit) {
+               char buf[DATE_COLS + 1];
+
+               if (MATCH(commit->title, 1) ||
+                   MATCH(commit->author, opt_author) ||
+                   MATCH(commit->id, opt_date))
+                       return TRUE;
+
+               if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
+                   MATCH(buf, 1))
+                       return TRUE;
+       }
+
+       return MATCH(blame->text, 1);
+
+#undef MATCH
+}
+
+static void
+blame_select(struct view *view, struct line *line)
+{
+       struct blame *blame = line->data;
+       struct blame_commit *commit = blame->commit;
+
+       if (!commit)
+               return;
+
+       if (!strcmp(commit->id, NULL_ID))
+               string_ncopy(ref_commit, "HEAD", 4);
+       else
+               string_copy_rev(ref_commit, commit->id);
+}
+
+static struct view_ops blame_ops = {
+       "line",
+       blame_open,
+       blame_read,
+       blame_draw,
+       blame_request,
+       blame_grep,
+       blame_select,
+};
 
 /*
  * Status backend
@@ -3128,16 +3801,20 @@ struct status {
        struct {
                mode_t mode;
                char rev[SIZEOF_REV];
+               char name[SIZEOF_STR];
        } old;
        struct {
                mode_t mode;
                char rev[SIZEOF_REV];
+               char name[SIZEOF_STR];
        } new;
-       char name[SIZEOF_STR];
 };
 
+static char status_onbranch[SIZEOF_STR];
 static struct status stage_status;
 static enum line_type stage_line_type;
+static size_t stage_chunks;
+static int *stage_chunk;
 
 /* Get fields from the diff line:
  * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
@@ -3151,7 +3828,7 @@ status_get_diff(struct status *file, char *buf, size_t bufsize)
        char *new_rev  = buf + 56;
        char *status   = buf + 97;
 
-       if (bufsize != 99 ||
+       if (bufsize < 99 ||
            old_mode[-1] != ':' ||
            new_mode[-1] != ' ' ||
            old_rev[-1]  != ' ' ||
@@ -3167,13 +3844,13 @@ status_get_diff(struct status *file, char *buf, size_t bufsize)
        file->old.mode = strtoul(old_mode, NULL, 8);
        file->new.mode = strtoul(new_mode, NULL, 8);
 
-       file->name[0] = 0;
+       file->old.name[0] = file->new.name[0] = 0;
 
        return TRUE;
 }
 
 static bool
-status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
+status_run(struct view *view, const char cmd[], char status, enum line_type type)
 {
        struct status *file = NULL;
        struct status *unmerged = NULL;
@@ -3212,8 +3889,10 @@ status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
                        }
 
                        /* Parse diff info part. */
-                       if (!diff) {
-                               file->status = '?';
+                       if (status) {
+                               file->status = status;
+                               if (status == 'A')
+                                       string_copy(file->old.rev, NULL_ID);
 
                        } else if (!file->status) {
                                if (!status_get_diff(file, buf, sepsize))
@@ -3234,7 +3913,7 @@ status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
                                        unmerged = file;
 
                                } else if (unmerged) {
-                                       int collapse = !strcmp(buf, unmerged->name);
+                                       int collapse = !strcmp(buf, unmerged->new.name);
 
                                        unmerged = NULL;
                                        if (collapse) {
@@ -3245,10 +3924,26 @@ status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
                                }
                        }
 
+                       /* Grab the old name for rename/copy. */
+                       if (!*file->old.name &&
+                           (file->status == 'R' || file->status == 'C')) {
+                               sepsize = sep - buf + 1;
+                               string_ncopy(file->old.name, buf, sepsize);
+                               bufsize -= sepsize;
+                               memmove(buf, sep + 1, bufsize);
+
+                               sep = memchr(buf, 0, bufsize);
+                               if (!sep)
+                                       break;
+                               sepsize = sep - buf + 1;
+                       }
+
                        /* git-ls-files just delivers a NUL separated
                         * list of file names similar to the second half
                         * of the git-diff-* output. */
-                       string_ncopy(file->name, buf, sepsize);
+                       string_ncopy(file->new.name, buf, sepsize);
+                       if (!*file->old.name)
+                               string_copy(file->old.name, file->new.name);
                        bufsize -= sepsize;
                        memmove(buf, sep + 1, bufsize);
                        file = NULL;
@@ -3269,16 +3964,21 @@ error_out:
 }
 
 /* Don't show unmerged entries in the staged section. */
-#define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached HEAD"
+#define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
 #define STATUS_LIST_OTHER_CMD \
-       "git ls-files -z --others --exclude-per-directory=.gitignore"
+       "git ls-files -z --others --exclude-standard"
+#define STATUS_LIST_NO_HEAD_CMD \
+       "git ls-files -z --cached --exclude-standard"
 
 #define STATUS_DIFF_INDEX_SHOW_CMD \
-       "git diff-index --root --patch-with-stat --find-copies-harder -C --cached HEAD -- %s 2>/dev/null"
+       "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
 
 #define STATUS_DIFF_FILES_SHOW_CMD \
-       "git diff-files --root --patch-with-stat --find-copies-harder -C -- %s 2>/dev/null"
+       "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
+
+#define STATUS_DIFF_NO_HEAD_SHOW_CMD \
+       "git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
 
 /* First parse staged info using git-diff-index(1), then parse unstaged
  * info using git-diff-files(1), and finally untracked files using
@@ -3286,102 +3986,110 @@ error_out:
 static bool
 status_open(struct view *view)
 {
-       struct stat statbuf;
-       char exclude[SIZEOF_STR];
-       char cmd[SIZEOF_STR];
        unsigned long prev_lineno = view->lineno;
        size_t i;
 
        for (i = 0; i < view->lines; i++)
                free(view->line[i].data);
        free(view->line);
-       view->lines = view->line_size = view->lineno = 0;
+       view->lines = view->line_alloc = view->line_size = view->lineno = 0;
        view->line = NULL;
 
-       if (!realloc_lines(view, view->line_size + 6))
+       if (!realloc_lines(view, view->line_size + 7))
                return FALSE;
 
-       if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
+       add_line_data(view, NULL, LINE_STAT_HEAD);
+       if (opt_no_head)
+               string_copy(status_onbranch, "Initial commit");
+       else if (!*opt_head)
+               string_copy(status_onbranch, "Not currently on any branch");
+       else if (!string_format(status_onbranch, "On branch %s", opt_head))
                return FALSE;
 
-       string_copy(cmd, STATUS_LIST_OTHER_CMD);
-
-       if (stat(exclude, &statbuf) >= 0) {
-               size_t cmdsize = strlen(cmd);
+       system("git update-index -q --refresh >/dev/null 2>/dev/null");
 
-               if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
-                   sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
-                       return FALSE;
-       }
+       if (opt_no_head &&
+           !status_run(view, STATUS_LIST_NO_HEAD_CMD, 'A', LINE_STAT_STAGED))
+               return FALSE;
+       else if (!status_run(view, STATUS_DIFF_INDEX_CMD, 0, LINE_STAT_STAGED))
+               return FALSE;
 
-       if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
-           !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
-           !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
+       if (!status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
+           !status_run(view, STATUS_LIST_OTHER_CMD, '?', LINE_STAT_UNTRACKED))
                return FALSE;
 
        /* If all went well restore the previous line number to stay in
-        * the context. */
+        * the context or select a line with something that can be
+        * updated. */
+       if (prev_lineno >= view->lines)
+               prev_lineno = view->lines - 1;
+       while (prev_lineno < view->lines && !view->line[prev_lineno].data)
+               prev_lineno++;
+       while (prev_lineno > 0 && !view->line[prev_lineno].data)
+               prev_lineno--;
+
+       /* If the above fails, always skip the "On branch" line. */
        if (prev_lineno < view->lines)
                view->lineno = prev_lineno;
        else
-               view->lineno = view->lines - 1;
+               view->lineno = 1;
+
+       if (view->lineno < view->offset)
+               view->offset = view->lineno;
+       else if (view->offset + view->height <= view->lineno)
+               view->offset = view->lineno - view->height + 1;
 
        return TRUE;
 }
 
 static bool
-status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
+status_draw(struct view *view, struct line *line, unsigned int lineno)
 {
        struct status *status = line->data;
-
-       wmove(view->win, lineno, 0);
-
-       if (selected) {
-               wattrset(view->win, get_line_attr(LINE_CURSOR));
-               wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
-
-       } else if (!status && line->type != LINE_STAT_NONE) {
-               wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
-               wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
-
-       } else {
-               wattrset(view->win, get_line_attr(line->type));
-       }
+       enum line_type type;
+       char *text;
 
        if (!status) {
-               char *text;
-
                switch (line->type) {
                case LINE_STAT_STAGED:
+                       type = LINE_STAT_SECTION;
                        text = "Changes to be committed:";
                        break;
 
                case LINE_STAT_UNSTAGED:
+                       type = LINE_STAT_SECTION;
                        text = "Changed but not updated:";
                        break;
 
                case LINE_STAT_UNTRACKED:
+                       type = LINE_STAT_SECTION;
                        text = "Untracked files:";
                        break;
 
                case LINE_STAT_NONE:
+                       type = LINE_DEFAULT;
                        text = "    (no files)";
                        break;
 
+               case LINE_STAT_HEAD:
+                       type = LINE_STAT_HEAD;
+                       text = status_onbranch;
+                       break;
+
                default:
                        return FALSE;
                }
+       } else {
+               static char buf[] = { '?', ' ', ' ', ' ', 0 };
 
-               waddstr(view->win, text);
-               return TRUE;
+               buf[0] = status->status;
+               if (draw_text(view, line->type, buf, TRUE))
+                       return TRUE;
+               type = LINE_DEFAULT;
+               text = status->new.name;
        }
 
-       waddch(view->win, status->status);
-       if (!selected)
-               wattrset(view->win, A_NORMAL);
-       wmove(view->win, lineno, 4);
-       waddstr(view->win, status->name);
-
+       draw_text(view, type, text, TRUE);
        return TRUE;
 }
 
@@ -3389,9 +4097,11 @@ static enum request
 status_enter(struct view *view, struct line *line)
 {
        struct status *status = line->data;
-       char path[SIZEOF_STR] = "";
+       char oldpath[SIZEOF_STR] = "";
+       char newpath[SIZEOF_STR] = "";
        char *info;
        size_t cmdsize = 0;
+       enum open_flags split;
 
        if (line->type == LINE_STAT_NONE ||
            (!status && line[1].type == LINE_STAT_NONE)) {
@@ -3399,8 +4109,15 @@ status_enter(struct view *view, struct line *line)
                return REQ_NONE;
        }
 
-       if (status && sq_quote(path, 0, status->name) >= sizeof(path))
-               return REQ_QUIT;
+       if (status) {
+               if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
+                       return REQ_QUIT;
+               /* Diffs for unmerged entries are empty when pasing the
+                * new path, so leave it empty. */
+               if (status->status != 'U' &&
+                   sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
+                       return REQ_QUIT;
+       }
 
        if (opt_cdup[0] &&
            line->type != LINE_STAT_UNTRACKED &&
@@ -3409,9 +4126,18 @@ status_enter(struct view *view, struct line *line)
 
        switch (line->type) {
        case LINE_STAT_STAGED:
-               if (!string_format_from(opt_cmd, &cmdsize,
-                                       STATUS_DIFF_INDEX_SHOW_CMD, path))
-                       return REQ_QUIT;
+               if (opt_no_head) {
+                       if (!string_format_from(opt_cmd, &cmdsize,
+                                               STATUS_DIFF_NO_HEAD_SHOW_CMD,
+                                               newpath))
+                               return REQ_QUIT;
+               } else {
+                       if (!string_format_from(opt_cmd, &cmdsize,
+                                               STATUS_DIFF_INDEX_SHOW_CMD,
+                                               oldpath, newpath))
+                               return REQ_QUIT;
+               }
+
                if (status)
                        info = "Staged changes to %s";
                else
@@ -3420,7 +4146,7 @@ status_enter(struct view *view, struct line *line)
 
        case LINE_STAT_UNSTAGED:
                if (!string_format_from(opt_cmd, &cmdsize,
-                                       STATUS_DIFF_FILES_SHOW_CMD, path))
+                                       STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
                        return REQ_QUIT;
                if (status)
                        info = "Unstaged changes to %s";
@@ -3432,21 +4158,24 @@ status_enter(struct view *view, struct line *line)
                if (opt_pipe)
                        return REQ_QUIT;
 
-
                if (!status) {
                        report("No file to show");
                        return REQ_NONE;
                }
 
-               opt_pipe = fopen(status->name, "r");
+               opt_pipe = fopen(status->new.name, "r");
                info = "Untracked file %s";
                break;
 
+       case LINE_STAT_HEAD:
+               return REQ_NONE;
+
        default:
                die("line type %d not handled in switch", line->type);
        }
 
-       open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
+       split = view_is_displayed(view) ? OPEN_SPLIT : 0;
+       open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | split);
        if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
                if (status) {
                        stage_status = *status;
@@ -3455,87 +4184,195 @@ status_enter(struct view *view, struct line *line)
                }
 
                stage_line_type = line->type;
-               string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.name);
+               stage_chunks = 0;
+               string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
        }
 
        return REQ_NONE;
 }
 
-
 static bool
-status_update_file(struct view *view, struct status *status, enum line_type type)
+status_exists(struct status *status, enum line_type type)
+{
+       struct view *view = VIEW(REQ_VIEW_STATUS);
+       struct line *line;
+
+       for (line = view->line; line < view->line + view->lines; line++) {
+               struct status *pos = line->data;
+
+               if (line->type == type && pos &&
+                   !strcmp(status->new.name, pos->new.name))
+                       return TRUE;
+       }
+
+       return FALSE;
+}
+
+
+static FILE *
+status_update_prepare(enum line_type type)
 {
        char cmd[SIZEOF_STR];
-       char buf[SIZEOF_STR];
        size_t cmdsize = 0;
-       size_t bufsize = 0;
-       size_t written = 0;
-       FILE *pipe;
 
        if (opt_cdup[0] &&
            type != LINE_STAT_UNTRACKED &&
            !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
-               return FALSE;
+               return NULL;
+
+       switch (type) {
+       case LINE_STAT_STAGED:
+               string_add(cmd, cmdsize, "git update-index -z --index-info");
+               break;
+
+       case LINE_STAT_UNSTAGED:
+       case LINE_STAT_UNTRACKED:
+               string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
+               break;
+
+       default:
+               die("line type %d not handled in switch", type);
+       }
+
+       return popen(cmd, "w");
+}
+
+static bool
+status_update_write(FILE *pipe, struct status *status, enum line_type type)
+{
+       char buf[SIZEOF_STR];
+       size_t bufsize = 0;
+       size_t written = 0;
 
        switch (type) {
        case LINE_STAT_STAGED:
                if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
-                                       status->old.mode,
+                                       status->old.mode,
                                        status->old.rev,
-                                       status->name, 0))
+                                       status->old.name, 0))
                        return FALSE;
-
-               string_add(cmd, cmdsize, "git update-index -z --index-info");
                break;
 
        case LINE_STAT_UNSTAGED:
        case LINE_STAT_UNTRACKED:
-               if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
+               if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
                        return FALSE;
-
-               string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
                break;
 
        default:
                die("line type %d not handled in switch", type);
        }
 
-       pipe = popen(cmd, "w");
+       while (!ferror(pipe) && written < bufsize) {
+               written += fwrite(buf + written, 1, bufsize - written, pipe);
+       }
+
+       return written == bufsize;
+}
+
+static bool
+status_update_file(struct status *status, enum line_type type)
+{
+       FILE *pipe = status_update_prepare(type);
+       bool result;
+
        if (!pipe)
                return FALSE;
 
-       while (!ferror(pipe) && written < bufsize) {
-               written += fwrite(buf + written, 1, bufsize - written, pipe);
+       result = status_update_write(pipe, status, type);
+       pclose(pipe);
+       return result;
+}
+
+static bool
+status_update_files(struct view *view, struct line *line)
+{
+       FILE *pipe = status_update_prepare(line->type);
+       bool result = TRUE;
+       struct line *pos = view->line + view->lines;
+       int files = 0;
+       int file, done;
+
+       if (!pipe)
+               return FALSE;
+
+       for (pos = line; pos < view->line + view->lines && pos->data; pos++)
+               files++;
+
+       for (file = 0, done = 0; result && file < files; line++, file++) {
+               int almost_done = file * 100 / files;
+
+               if (almost_done > done) {
+                       done = almost_done;
+                       string_format(view->ref, "updating file %u of %u (%d%% done)",
+                                     file, files, done);
+                       update_view_title(view);
+               }
+               result = status_update_write(pipe, line->data, line->type);
        }
 
-       pclose(pipe);
+       pclose(pipe);
+       return result;
+}
+
+static bool
+status_update(struct view *view)
+{
+       struct line *line = &view->line[view->lineno];
+
+       assert(view->lines);
+
+       if (!line->data) {
+               /* This should work even for the "On branch" line. */
+               if (line < view->line + view->lines && !line[1].data) {
+                       report("Nothing to update");
+                       return FALSE;
+               }
+
+               if (!status_update_files(view, line + 1)) {
+                       report("Failed to update file status");
+                       return FALSE;
+               }
 
-       if (written != bufsize)
+       } else if (!status_update_file(line->data, line->type)) {
+               report("Failed to update file status");
                return FALSE;
+       }
 
        return TRUE;
 }
 
-static void
-status_update(struct view *view)
+static bool
+status_checkout(struct view *view)
 {
        struct line *line = &view->line[view->lineno];
 
        assert(view->lines);
 
-       if (!line->data) {
-               while (++line < view->line + view->lines && line->data) {
-                       if (!status_update_file(view, line->data, line->type))
-                               report("Failed to update file status");
+       if (!line->data || line->type != LINE_STAT_UNSTAGED) {
+               /* This should work even for the "On branch" line. */
+               if (line < view->line + view->lines && !line[1].data) {
+                       report("Nothing to checkout");
+               } else if (line->type == LINE_STAT_UNTRACKED) {
+                       report("Cannot checkout untracked files");
+               } else if (line->type == LINE_STAT_STAGED) {
+                       report("Cannot checkout staged files");
+               } else {
+                       report("Cannot checkout multiple files");
                }
+               return FALSE;
 
-               if (!line[-1].data) {
-                       report("Nothing to update");
-                       return;
+       } else {
+               struct status *status = line->data;
+               char cmd[SIZEOF_STR];
+               char file_sq[SIZEOF_STR];
+
+               if (sq_quote(file_sq, 0, status->old.name) < sizeof(file_sq) &&
+                   string_format(cmd, "git checkout %s%s", opt_cdup, file_sq)) {
+                       run_confirm(cmd, "Are you sure you want to overwrite any changes?");
                }
 
-       } else if (!status_update_file(view, line->data, line->type)) {
-               report("Failed to update file status");
+               return TRUE;
        }
 }
 
@@ -3546,7 +4383,13 @@ status_request(struct view *view, enum request request, struct line *line)
 
        switch (request) {
        case REQ_STATUS_UPDATE:
-               status_update(view);
+               if (!status_update(view))
+                       return REQ_NONE;
+               break;
+
+       case REQ_STATUS_CHECKOUT:
+               if (!status_checkout(view))
+                       return REQ_NONE;
                break;
 
        case REQ_STATUS_MERGE:
@@ -3554,16 +4397,23 @@ status_request(struct view *view, enum request request, struct line *line)
                        report("Merging only possible for files with unmerged status ('U').");
                        return REQ_NONE;
                }
-               open_mergetool(status->name);
+               open_mergetool(status->new.name);
                break;
 
        case REQ_EDIT:
                if (!status)
                        return request;
 
-               open_editor(status->status != '?', status->name);
+               open_editor(status->status != '?', status->new.name);
                break;
 
+       case REQ_VIEW_BLAME:
+               if (status) {
+                       string_copy(opt_file, status->new.name);
+                       opt_ref[0] = 0;
+               }
+               return request;
+
        case REQ_ENTER:
                /* After returning the status view has been split to
                 * show the stage view. No further reloading is
@@ -3592,7 +4442,7 @@ status_select(struct view *view, struct line *line)
        char *text;
        char *key;
 
-       if (status && !string_format(file, "'%s'", status->name))
+       if (status && !string_format(file, "'%s'", status->new.name))
                return;
 
        if (!status && line[1].type == LINE_STAT_NONE)
@@ -3611,6 +4461,7 @@ status_select(struct view *view, struct line *line)
                text = "Press %s to stage %s for addition";
                break;
 
+       case LINE_STAT_HEAD:
        case LINE_STAT_NONE:
                text = "Nothing to update";
                break;
@@ -3645,7 +4496,7 @@ status_grep(struct view *view, struct line *line)
                char *text;
 
                switch (state) {
-               case S_NAME:    text = status->name;    break;
+               case S_NAME:    text = status->new.name;        break;
                case S_STATUS:
                        buf[0] = status->status;
                        text = buf;
@@ -3689,36 +4540,39 @@ stage_diff_line(FILE *pipe, struct line *line)
        return written == bufsize;
 }
 
-static struct line *
-stage_diff_hdr(struct view *view, struct line *line)
+static bool
+stage_diff_write(FILE *pipe, struct line *line, struct line *end)
 {
-       int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1;
-       struct line *diff_hdr;
-
-       if (line->type == LINE_DIFF_CHUNK)
-               diff_hdr = line - 1;
-       else
-               diff_hdr = view->line + 1;
+       while (line < end) {
+               if (!stage_diff_line(pipe, line++))
+                       return FALSE;
+               if (line->type == LINE_DIFF_CHUNK ||
+                   line->type == LINE_DIFF_HEADER)
+                       break;
+       }
 
-       while (diff_hdr > view->line && diff_hdr < view->line + view->lines) {
-               if (diff_hdr->type == LINE_DIFF_HEADER)
-                       return diff_hdr;
+       return TRUE;
+}
 
-               diff_hdr += diff_hdr_dir;
-       }
+static struct line *
+stage_diff_find(struct view *view, struct line *line, enum line_type type)
+{
+       for (; view->line < line; line--)
+               if (line->type == type)
+                       return line;
 
        return NULL;
 }
 
 static bool
-stage_update_chunk(struct view *view, struct line *line)
+stage_update_chunk(struct view *view, struct line *chunk)
 {
        char cmd[SIZEOF_STR];
        size_t cmdsize = 0;
-       struct line *diff_hdr, *diff_chunk, *diff_end;
+       struct line *diff_hdr;
        FILE *pipe;
 
-       diff_hdr = stage_diff_hdr(view, line);
+       diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
        if (!diff_hdr)
                return FALSE;
 
@@ -3727,7 +4581,7 @@ stage_update_chunk(struct view *view, struct line *line)
                return FALSE;
 
        if (!string_format_from(cmd, &cmdsize,
-                               "git apply --cached %s - && "
+                               "git apply --whitespace=nowarn --cached %s - && "
                                "git update-index -q --unmerged --refresh 2>/dev/null",
                                stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
                return FALSE;
@@ -3736,69 +4590,83 @@ stage_update_chunk(struct view *view, struct line *line)
        if (!pipe)
                return FALSE;
 
-       diff_end = view->line + view->lines;
-       if (line->type != LINE_DIFF_CHUNK) {
-               diff_chunk = diff_hdr;
+       if (!stage_diff_write(pipe, diff_hdr, chunk) ||
+           !stage_diff_write(pipe, chunk, view->line + view->lines))
+               chunk = NULL;
 
-       } else {
-               for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++)
-                       if (diff_chunk->type == LINE_DIFF_CHUNK ||
-                           diff_chunk->type == LINE_DIFF_HEADER)
-                               diff_end = diff_chunk;
-
-               diff_chunk = line;
-
-               while (diff_hdr->type != LINE_DIFF_CHUNK) {
-                       switch (diff_hdr->type) {
-                       case LINE_DIFF_HEADER:
-                       case LINE_DIFF_INDEX:
-                       case LINE_DIFF_ADD:
-                       case LINE_DIFF_DEL:
-                               break;
+       pclose(pipe);
 
-                       default:
-                               diff_hdr++;
-                               continue;
-                       }
+       return chunk ? TRUE : FALSE;
+}
 
-                       if (!stage_diff_line(pipe, diff_hdr++)) {
-                               pclose(pipe);
-                               return FALSE;
-                       }
+static bool
+stage_update(struct view *view, struct line *line)
+{
+       struct line *chunk = NULL;
+
+       if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED)
+               chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
+
+       if (chunk) {
+               if (!stage_update_chunk(view, chunk)) {
+                       report("Failed to apply chunk");
+                       return FALSE;
                }
-       }
 
-       while (diff_chunk < diff_end && stage_diff_line(pipe, diff_chunk))
-               diff_chunk++;
+       } else if (!stage_status.status) {
+               view = VIEW(REQ_VIEW_STATUS);
 
-       pclose(pipe);
+               for (line = view->line; line < view->line + view->lines; line++)
+                       if (line->type == stage_line_type)
+                               break;
+
+               if (!status_update_files(view, line + 1)) {
+                       report("Failed to update files");
+                       return FALSE;
+               }
 
-       if (diff_chunk != diff_end)
+       } else if (!status_update_file(&stage_status, stage_line_type)) {
+               report("Failed to update file");
                return FALSE;
+       }
 
        return TRUE;
 }
 
 static void
-stage_update(struct view *view, struct line *line)
+stage_next(struct view *view, struct line *line)
 {
-       if (stage_line_type != LINE_STAT_UNTRACKED &&
-           (line->type == LINE_DIFF_CHUNK || !stage_status.status)) {
-               if (!stage_update_chunk(view, line)) {
-                       report("Failed to apply chunk");
-                       return;
-               }
+       int i;
 
-       } else if (!status_update_file(view, &stage_status, stage_line_type)) {
-               report("Failed to update file");
-               return;
+       if (!stage_chunks) {
+               static size_t alloc = 0;
+               int *tmp;
+
+               for (line = view->line; line < view->line + view->lines; line++) {
+                       if (line->type != LINE_DIFF_CHUNK)
+                               continue;
+
+                       tmp = realloc_items(stage_chunk, &alloc,
+                                           stage_chunks, sizeof(*tmp));
+                       if (!tmp) {
+                               report("Allocation failure");
+                               return;
+                       }
+
+                       stage_chunk = tmp;
+                       stage_chunk[stage_chunks++] = line - view->line;
+               }
        }
 
-       open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
+       for (i = 0; i < stage_chunks; i++) {
+               if (stage_chunk[i] > view->lineno) {
+                       do_scroll_view(view, stage_chunk[i] - view->lineno);
+                       report("Chunk %d of %d", i + 1, stage_chunks);
+                       return;
+               }
+       }
 
-       view = VIEW(REQ_VIEW_STATUS);
-       if (view_is_displayed(view))
-               status_enter(view, &view->line[view->lineno]);
+       report("No next chunk found");
 }
 
 static enum request
@@ -3806,24 +4674,57 @@ stage_request(struct view *view, enum request request, struct line *line)
 {
        switch (request) {
        case REQ_STATUS_UPDATE:
-               stage_update(view, line);
+               if (!stage_update(view, line))
+                       return REQ_NONE;
                break;
 
+       case REQ_STAGE_NEXT:
+               if (stage_line_type == LINE_STAT_UNTRACKED) {
+                       report("File is untracked; press %s to add",
+                              get_key(REQ_STATUS_UPDATE));
+                       return REQ_NONE;
+               }
+               stage_next(view, line);
+               return REQ_NONE;
+
        case REQ_EDIT:
-               if (!stage_status.name[0])
+               if (!stage_status.new.name[0])
                        return request;
 
-               open_editor(stage_status.status != '?', stage_status.name);
+               open_editor(stage_status.status != '?', stage_status.new.name);
                break;
 
-       case REQ_ENTER:
-               pager_request(view, request, line);
+       case REQ_REFRESH:
+               /* Reload everything ... */
                break;
 
+       case REQ_VIEW_BLAME:
+               if (stage_status.new.name[0]) {
+                       string_copy(opt_file, stage_status.new.name);
+                       opt_ref[0] = 0;
+               }
+               return request;
+
+       case REQ_ENTER:
+               return pager_request(view, request, line);
+
        default:
                return request;
        }
 
+       open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
+
+       /* Check whether the staged entry still exists, and close the
+        * stage view if it doesn't. */
+       if (!status_exists(&stage_status, stage_line_type))
+               return REQ_VIEW_CLOSE;
+
+       if (stage_line_type == LINE_STAT_UNTRACKED)
+               opt_pipe = fopen(stage_status.new.name, "r");
+       else
+               string_copy(opt_cmd, view->cmd);
+       open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_NOMAXIMIZE);
+
        return REQ_NONE;
 }
 
@@ -3850,6 +4751,7 @@ struct commit {
        struct ref **refs;              /* Repository references. */
        chtype graph[SIZEOF_REVGRAPH];  /* Ancestry chain graphics. */
        size_t graph_size;              /* The width of the graph array. */
+       bool has_parents;               /* Rewritten --parents seen. */
 };
 
 /* Size of rev graph with no  "padding" columns */
@@ -3890,6 +4792,15 @@ append_to_rev_graph(struct rev_graph *graph, chtype symbol)
                commit->graph[commit->graph_size++] = symbol;
 }
 
+static void
+clear_rev_graph(struct rev_graph *graph)
+{
+       graph->boundary = 0;
+       graph->size = graph->pos = 0;
+       graph->commit = NULL;
+       memset(graph->parents, 0, sizeof(*graph->parents));
+}
+
 static void
 done_rev_graph(struct rev_graph *graph)
 {
@@ -3906,9 +4817,7 @@ done_rev_graph(struct rev_graph *graph)
                }
        }
 
-       graph->size = graph->pos = 0;
-       graph->commit = NULL;
-       memset(graph->parents, 0, sizeof(*graph->parents));
+       clear_rev_graph(graph);
 }
 
 static void
@@ -3956,7 +4865,7 @@ draw_rev_graph(struct rev_graph *graph)
        };
        enum { DEFAULT, RSHARP, RDIAG, LDIAG };
        static struct rev_filler fillers[] = {
-               { ' ',  REVGRAPH_LINE },
+               { ' ',  '|' },
                { '`',  '.' },
                { '\'', ' ' },
                { '/',  ' ' },
@@ -3965,6 +4874,9 @@ draw_rev_graph(struct rev_graph *graph)
        struct rev_filler *filler;
        size_t i;
 
+       if (opt_line_graphics)
+               fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
+
        filler = &fillers[DEFAULT];
 
        for (i = 0; i < graph->pos; i++) {
@@ -4048,114 +4960,54 @@ update_rev_graph(struct rev_graph *graph)
  */
 
 static bool
-main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
+main_draw(struct view *view, struct line *line, unsigned int lineno)
 {
-       char buf[DATE_COLS + 1];
        struct commit *commit = line->data;
-       enum line_type type;
-       int col = 0;
-       size_t timelen;
-       size_t authorlen;
-       int trimmed = 1;
 
        if (!*commit->author)
                return FALSE;
 
-       wmove(view->win, lineno, col);
-
-       if (selected) {
-               type = LINE_CURSOR;
-               wattrset(view->win, get_line_attr(type));
-               wchgat(view->win, -1, 0, type, NULL);
-
-       } else {
-               type = LINE_MAIN_COMMIT;
-               wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
-       }
-
-       timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
-       waddnstr(view->win, buf, timelen);
-       waddstr(view->win, " ");
-
-       col += DATE_COLS;
-       wmove(view->win, lineno, col);
-       if (type != LINE_CURSOR)
-               wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
-
-       if (opt_utf8) {
-               authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
-       } else {
-               authorlen = strlen(commit->author);
-               if (authorlen > AUTHOR_COLS - 2) {
-                       authorlen = AUTHOR_COLS - 2;
-                       trimmed = 1;
-               }
-       }
-
-       if (trimmed) {
-               waddnstr(view->win, commit->author, authorlen);
-               if (type != LINE_CURSOR)
-                       wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
-               waddch(view->win, '~');
-       } else {
-               waddstr(view->win, commit->author);
-       }
-
-       col += AUTHOR_COLS;
-
-       if (opt_rev_graph && commit->graph_size) {
-               size_t i;
-
-               if (type != LINE_CURSOR)
-                       wattrset(view->win, get_line_attr(LINE_MAIN_REVGRAPH));
-               wmove(view->win, lineno, col);
-               /* Using waddch() instead of waddnstr() ensures that
-                * they'll be rendered correctly for the cursor line. */
-               for (i = 0; i < commit->graph_size; i++)
-                       waddch(view->win, commit->graph[i]);
+       if (opt_date && draw_date(view, &commit->time))
+               return TRUE;
 
-               waddch(view->win, ' ');
-               col += commit->graph_size + 1;
-       }
-       if (type != LINE_CURSOR)
-               wattrset(view->win, A_NORMAL);
+       if (opt_author &&
+           draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
+               return TRUE;
 
-       wmove(view->win, lineno, col);
+       if (opt_rev_graph && commit->graph_size &&
+           draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
+               return TRUE;
 
-       if (commit->refs) {
+       if (opt_show_refs && commit->refs) {
                size_t i = 0;
 
                do {
-                       if (type == LINE_CURSOR)
-                               ;
+                       enum line_type type;
+
+                       if (commit->refs[i]->head)
+                               type = LINE_MAIN_HEAD;
+                       else if (commit->refs[i]->ltag)
+                               type = LINE_MAIN_LOCAL_TAG;
                        else if (commit->refs[i]->tag)
-                               wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
+                               type = LINE_MAIN_TAG;
+                       else if (commit->refs[i]->tracked)
+                               type = LINE_MAIN_TRACKED;
                        else if (commit->refs[i]->remote)
-                               wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
+                               type = LINE_MAIN_REMOTE;
                        else
-                               wattrset(view->win, get_line_attr(LINE_MAIN_REF));
-                       waddstr(view->win, "[");
-                       waddstr(view->win, commit->refs[i]->name);
-                       waddstr(view->win, "]");
-                       if (type != LINE_CURSOR)
-                               wattrset(view->win, A_NORMAL);
-                       waddstr(view->win, " ");
-                       col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
-               } while (commit->refs[i++]->next);
-       }
-
-       if (type != LINE_CURSOR)
-               wattrset(view->win, get_line_attr(type));
+                               type = LINE_MAIN_REF;
 
-       {
-               int titlelen = strlen(commit->title);
-
-               if (col + titlelen > view->width)
-                       titlelen = view->width - col;
+                       if (draw_text(view, type, "[", TRUE) ||
+                           draw_text(view, type, commit->refs[i]->name, TRUE) ||
+                           draw_text(view, type, "]", TRUE))
+                               return TRUE;
 
-               waddnstr(view->win, commit->title, titlelen);
+                       if (draw_text(view, LINE_DEFAULT, " ", TRUE))
+                               return TRUE;
+               } while (commit->refs[i++]->next);
        }
 
+       draw_text(view, LINE_DEFAULT, commit->title, TRUE);
        return TRUE;
 }
 
@@ -4168,7 +5020,22 @@ main_read(struct view *view, char *line)
        struct commit *commit;
 
        if (!line) {
+               int i;
+
+               if (!view->lines && !view->parent)
+                       die("No revisions match the given arguments.");
+               if (view->lines > 0) {
+                       commit = view->line[view->lines - 1].data;
+                       if (!*commit->author) {
+                               view->lines--;
+                               free(commit);
+                               graph->commit = NULL;
+                       }
+               }
                update_rev_graph(graph);
+
+               for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
+                       clear_rev_graph(&graph_stacks[i]);
                return TRUE;
        }
 
@@ -4188,6 +5055,12 @@ main_read(struct view *view, char *line)
                commit->refs = get_refs(commit->id);
                graph->commit = commit;
                add_line_data(view, commit, LINE_MAIN_COMMIT);
+
+               while ((line = strchr(line, ' '))) {
+                       line++;
+                       push_rev_graph(graph->parents, line);
+                       commit->has_parents = TRUE;
+               }
                return TRUE;
        }
 
@@ -4197,6 +5070,8 @@ main_read(struct view *view, char *line)
 
        switch (type) {
        case LINE_PARENT:
+               if (commit->has_parents)
+                       break;
                push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
                break;
 
@@ -4280,19 +5155,42 @@ main_request(struct view *view, enum request request, struct line *line)
 {
        enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
 
-       if (request == REQ_ENTER)
+       switch (request) {
+       case REQ_ENTER:
                open_view(view, REQ_VIEW_DIFF, flags);
-       else
+               break;
+       case REQ_REFRESH:
+               string_copy(opt_cmd, view->cmd);
+               open_view(view, REQ_VIEW_MAIN, OPEN_RELOAD);
+               break;
+       default:
                return request;
+       }
 
        return REQ_NONE;
 }
 
+static bool
+grep_refs(struct ref **refs, regex_t *regex)
+{
+       regmatch_t pmatch;
+       size_t i = 0;
+
+       if (!refs)
+               return FALSE;
+       do {
+               if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
+                       return TRUE;
+       } while (refs[i++]->next);
+
+       return FALSE;
+}
+
 static bool
 main_grep(struct view *view, struct line *line)
 {
        struct commit *commit = line->data;
-       enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
+       enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
        char buf[DATE_COLS + 1];
        regmatch_t pmatch;
 
@@ -4301,13 +5199,24 @@ main_grep(struct view *view, struct line *line)
 
                switch (state) {
                case S_TITLE:   text = commit->title;   break;
-               case S_AUTHOR:  text = commit->author;  break;
+               case S_AUTHOR:
+                       if (!opt_author)
+                               continue;
+                       text = commit->author;
+                       break;
                case S_DATE:
+                       if (!opt_date)
+                               continue;
                        if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
                                continue;
                        text = buf;
                        break;
-
+               case S_REFS:
+                       if (!opt_show_refs)
+                               continue;
+                       if (grep_refs(commit->refs, view->regex) == TRUE)
+                               return TRUE;
+                       continue;
                default:
                        return FALSE;
                }
@@ -4369,6 +5278,9 @@ unicode_width(unsigned long c)
            || (c >= 0x30000 && c <= 0x3fffd)))
                return 2;
 
+       if (c == '\t')
+               return opt_tab_size;
+
        return 1;
 }
 
@@ -4436,21 +5348,19 @@ utf8_to_unicode(const char *string, size_t length)
 
 /* Calculates how much of string can be shown within the given maximum width
  * and sets trimmed parameter to non-zero value if all of string could not be
- * shown.
- *
- * Additionally, adds to coloffset how many many columns to move to align with
- * the expected position. Takes into account how multi-byte and double-width
- * characters will effect the cursor position.
+ * shown. If the reserve flag is TRUE, it will reserve at least one
+ * trailing character, which can be useful when drawing a delimiter.
  *
  * Returns the number of bytes to output from string to satisfy max_width. */
 static size_t
-utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
+utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
 {
        const char *start = string;
        const char *end = strchr(string, '\0');
-       size_t mbwidth = 0;
-       size_t width = 0;
+       unsigned char last_bytes = 0;
+       size_t last_ucwidth = 0;
 
+       *width = 0;
        *trimmed = 0;
 
        while (string < end) {
@@ -4471,30 +5381,22 @@ utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
                        break;
 
                ucwidth = unicode_width(unicode);
-               width  += ucwidth;
-               if (width > max_width) {
+               *width  += ucwidth;
+               if (*width > max_width) {
                        *trimmed = 1;
+                       *width -= ucwidth;
+                       if (reserve && *width == max_width) {
+                               string -= last_bytes;
+                               *width -= last_ucwidth;
+                       }
                        break;
                }
 
-               /* The column offset collects the differences between the
-                * number of bytes encoding a character and the number of
-                * columns will be used for rendering said character.
-                *
-                * So if some character A is encoded in 2 bytes, but will be
-                * represented on the screen using only 1 byte this will and up
-                * adding 1 to the multi-byte column offset.
-                *
-                * Assumes that no double-width character can be encoding in
-                * less than two bytes. */
-               if (bytes > ucwidth)
-                       mbwidth += bytes - ucwidth;
-
                string  += bytes;
+               last_bytes = bytes;
+               last_ucwidth = ucwidth;
        }
 
-       *coloffset += mbwidth;
-
        return string - start;
 }
 
@@ -4604,6 +5506,63 @@ init_display(void)
        /* Enable keyboard mapping */
        keypad(status_win, TRUE);
        wbkgdset(status_win, get_line_attr(LINE_STATUS));
+
+       TABSIZE = opt_tab_size;
+       if (opt_line_graphics) {
+               line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
+       }
+}
+
+static bool
+prompt_yesno(const char *prompt)
+{
+       enum { WAIT, STOP, CANCEL  } status = WAIT;
+       bool answer = FALSE;
+
+       while (status == WAIT) {
+               struct view *view;
+               int i, key;
+
+               input_mode = TRUE;
+
+               foreach_view (view, i)
+                       update_view(view);
+
+               input_mode = FALSE;
+
+               mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
+               wclrtoeol(status_win);
+
+               /* Refresh, accept single keystroke of input */
+               key = wgetch(status_win);
+               switch (key) {
+               case ERR:
+                       break;
+
+               case 'y':
+               case 'Y':
+                       answer = TRUE;
+                       status = STOP;
+                       break;
+
+               case KEY_ESC:
+               case KEY_RETURN:
+               case KEY_ENTER:
+               case KEY_BACKSPACE:
+               case 'n':
+               case 'N':
+               case '\n':
+               default:
+                       answer = FALSE;
+                       status = CANCEL;
+               }
+       }
+
+       /* Clear the status window */
+       status_empty = FALSE;
+       report("");
+
+       return answer;
 }
 
 static char *
@@ -4677,18 +5636,21 @@ read_prompt(const char *prompt)
  * Repository references
  */
 
-static struct ref *refs;
-static size_t refs_size;
+static struct ref *refs = NULL;
+static size_t refs_alloc = 0;
+static size_t refs_size = 0;
 
 /* Id <-> ref store */
-static struct ref ***id_refs;
-static size_t id_refs_size;
+static struct ref ***id_refs = NULL;
+static size_t id_refs_alloc = 0;
+static size_t id_refs_size = 0;
 
 static struct ref **
 get_refs(char *id)
 {
        struct ref ***tmp_id_refs;
        struct ref **ref_list = NULL;
+       size_t ref_list_alloc = 0;
        size_t ref_list_size = 0;
        size_t i;
 
@@ -4696,7 +5658,8 @@ get_refs(char *id)
                if (!strcmp(id, id_refs[i][0]->id))
                        return id_refs[i];
 
-       tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
+       tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
+                                   sizeof(*id_refs));
        if (!tmp_id_refs)
                return NULL;
 
@@ -4708,7 +5671,8 @@ get_refs(char *id)
                if (strcmp(id, refs[i].id))
                        continue;
 
-               tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
+               tmp = realloc_items(ref_list, &ref_list_alloc,
+                                   ref_list_size + 1, sizeof(*ref_list));
                if (!tmp) {
                        if (ref_list)
                                free(ref_list);
@@ -4738,15 +5702,21 @@ read_ref(char *id, size_t idlen, char *name, size_t namelen)
 {
        struct ref *ref;
        bool tag = FALSE;
+       bool ltag = FALSE;
        bool remote = FALSE;
+       bool tracked = FALSE;
+       bool check_replace = FALSE;
+       bool head = FALSE;
 
        if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
-               /* Commits referenced by tags has "^{}" appended. */
-               if (name[namelen - 1] != '}')
-                       return OK;
-
-               while (namelen > 0 && name[namelen] != '^')
-                       namelen--;
+               if (!strcmp(name + namelen - 3, "^{}")) {
+                       namelen -= 3;
+                       name[namelen] = 0;
+                       if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
+                               check_replace = TRUE;
+               } else {
+                       ltag = TRUE;
+               }
 
                tag = TRUE;
                namelen -= STRING_SIZE("refs/tags/");
@@ -4756,16 +5726,29 @@ read_ref(char *id, size_t idlen, char *name, size_t namelen)
                remote = TRUE;
                namelen -= STRING_SIZE("refs/remotes/");
                name    += STRING_SIZE("refs/remotes/");
+               tracked  = !strcmp(opt_remote, name);
 
        } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
                namelen -= STRING_SIZE("refs/heads/");
                name    += STRING_SIZE("refs/heads/");
+               head     = !strncmp(opt_head, name, namelen);
 
        } else if (!strcmp(name, "HEAD")) {
+               opt_no_head = FALSE;
                return OK;
        }
 
-       refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
+       if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
+               /* it's an annotated tag, replace the previous sha1 with the
+                * resolved commit id; relies on the fact git-ls-remote lists
+                * the commit id of an annotated tag right beofre the commit id
+                * it points to. */
+               refs[refs_size - 1].ltag = ltag;
+               string_copy_rev(refs[refs_size - 1].id, id);
+
+               return OK;
+       }
+       refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
        if (!refs)
                return ERR;
 
@@ -4776,8 +5759,11 @@ read_ref(char *id, size_t idlen, char *name, size_t namelen)
 
        strncpy(ref->name, name, namelen);
        ref->name[namelen] = 0;
+       ref->head = head;
        ref->tag = tag;
+       ref->ltag = ltag;
        ref->remote = remote;
+       ref->tracked = tracked;
        string_copy_rev(ref->id, id);
 
        return OK;
@@ -4801,11 +5787,33 @@ read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen
        if (!strcmp(name, "core.editor"))
                string_ncopy(opt_editor, value, valuelen);
 
+       /* branch.<head>.remote */
+       if (*opt_head &&
+           !strncmp(name, "branch.", 7) &&
+           !strncmp(name + 7, opt_head, strlen(opt_head)) &&
+           !strcmp(name + 7 + strlen(opt_head), ".remote"))
+               string_ncopy(opt_remote, value, valuelen);
+
+       if (*opt_head && *opt_remote &&
+           !strncmp(name, "branch.", 7) &&
+           !strncmp(name + 7, opt_head, strlen(opt_head)) &&
+           !strcmp(name + 7 + strlen(opt_head), ".merge")) {
+               size_t from = strlen(opt_remote);
+
+               if (!strncmp(value, "refs/heads/", STRING_SIZE("refs/heads/"))) {
+                       value += STRING_SIZE("refs/heads/");
+                       valuelen -= STRING_SIZE("refs/heads/");
+               }
+
+               if (!string_format_from(opt_remote, &from, "/%s", value))
+                       opt_remote[0] = 0;
+       }
+
        return OK;
 }
 
 static int
-load_repo_config(void)
+load_git_config(void)
 {
        return read_properties(popen(GIT_CONFIG " --list", "r"),
                               "=", read_repo_config_option);
@@ -4825,20 +5833,36 @@ read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
                 * Default to true for the unknown case. */
                opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
 
-       } else {
+       } else if (opt_cdup[0] == ' ') {
                string_ncopy(opt_cdup, name, namelen);
+       } else {
+               if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
+                       namelen -= STRING_SIZE("refs/heads/");
+                       name    += STRING_SIZE("refs/heads/");
+                       string_ncopy(opt_head, name, namelen);
+               }
        }
 
        return OK;
 }
 
-/* XXX: The line outputted by "--show-cdup" can be empty so the option
- * must be the last one! */
 static int
 load_repo_info(void)
 {
-       return read_properties(popen("git rev-parse --git-dir --is-inside-work-tree --show-cdup 2>/dev/null", "r"),
-                              "=", read_repo_info);
+       int result;
+       FILE *pipe = popen("(git rev-parse --git-dir --is-inside-work-tree "
+                          " --show-cdup; git symbolic-ref HEAD) 2>/dev/null", "r");
+
+       /* XXX: The line outputted by "--show-cdup" can be empty so
+        * initialize it to something invalid to make it possible to
+        * detect whether it has been set or not. */
+       opt_cdup[0] = ' ';
+
+       result = read_properties(pipe, "=", read_repo_info);
+       if (opt_cdup[0] == ' ')
+               opt_cdup[0] = 0;
+
+       return result;
 }
 
 static int
@@ -4911,6 +5935,18 @@ die(const char *err, ...)
        exit(1);
 }
 
+static void
+warn(const char *msg, ...)
+{
+       va_list args;
+
+       va_start(args, msg);
+       fputs("tig warning: ", stderr);
+       vfprintf(stderr, msg, args);
+       fputs("\n", stderr);
+       va_end(args);
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -4932,32 +5968,32 @@ main(int argc, char *argv[])
        if (load_options() == ERR)
                die("Failed to load user config.");
 
-       /* Load the repo config file so options can be overwritten from
-        * the command line. */
-       if (load_repo_config() == ERR)
+       if (load_git_config() == ERR)
                die("Failed to load repo config.");
 
-       if (!parse_options(argc, argv))
+       request = parse_options(argc, argv);
+       if (request == REQ_NONE)
                return 0;
 
        /* Require a git repository unless when running in pager mode. */
-       if (!opt_git_dir[0])
+       if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
                die("Not a git repository");
 
+       if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
+               opt_utf8 = FALSE;
+
        if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
                opt_iconv = iconv_open(opt_codeset, opt_encoding);
                if (opt_iconv == ICONV_NONE)
                        die("Failed to initialize character set conversion");
        }
 
-       if (load_refs() == ERR)
+       if (*opt_git_dir && load_refs() == ERR)
                die("Failed to load refs.");
 
        for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
                view->cmd_env = getenv(view->cmd_env);
 
-       request = opt_request;
-
        init_display();
 
        while (view_driver(display[current_view], request)) {
@@ -4988,11 +6024,13 @@ main(int argc, char *argv[])
 
                        if (cmd && string_format(opt_cmd, "git %s", cmd)) {
                                if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
-                                       opt_request = REQ_VIEW_DIFF;
+                                       request = REQ_VIEW_DIFF;
                                } else {
-                                       opt_request = REQ_VIEW_PAGER;
+                                       request = REQ_VIEW_PAGER;
                                }
-                               break;
+
+                               /* Always reload^Wrerun commands from the prompt. */
+                               open_view(view, request, OPEN_RELOAD);
                        }
 
                        request = REQ_NONE;