Merge branch 'mg/placeholders-are-lowercase'

[git.git] / builtin / merge.c

diff --git a/builtin/merge.c b/builtin/merge.c
index 8c58c3cc4a7cfe5eae9675f627254f61c14f7be2..a89ddbb65578182d1d0cbd9b0104889a6dc05ac8 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -194,7 +194,7 @@ static struct option builtin_merge_options[] = {
                "merge strategy to use", option_parse_strategy),
        OPT_CALLBACK('X', "strategy-option", &xopts, "option=value",
                "option for selected merge strategy", option_parse_x),
-       OPT_CALLBACK('m', "message", &merge_msg, "MESSAGE",
+       OPT_CALLBACK('m', "message", &merge_msg, "message",
                "merge commit message (for a non-fast-forward merge)",
                option_parse_message),
        OPT__VERBOSITY(&verbosity),
@@ -797,6 +797,32 @@ static void add_strategies(const char *string, unsigned attr)
 
 }
 
+static void write_merge_msg(void)
+{
+       int fd = open(git_path("MERGE_MSG"), O_WRONLY | O_CREAT, 0666);
+       if (fd < 0)
+               die_errno("Could not open '%s' for writing",
+                         git_path("MERGE_MSG"));
+       if (write_in_full(fd, merge_msg.buf, merge_msg.len) != merge_msg.len)
+               die_errno("Could not write to '%s'", git_path("MERGE_MSG"));
+       close(fd);
+}
+
+static void read_merge_msg(void)
+{
+       strbuf_reset(&merge_msg);
+       if (strbuf_read_file(&merge_msg, git_path("MERGE_MSG"), 0) < 0)
+               die_errno("Could not read from '%s'", git_path("MERGE_MSG"));
+}
+
+static void run_prepare_commit_msg(void)
+{
+       write_merge_msg();
+       run_hook(get_index_file(), "prepare-commit-msg",
+                git_path("MERGE_MSG"), "merge", NULL, NULL);
+       read_merge_msg();
+}
+
 static int merge_trivial(void)
 {
        unsigned char result_tree[20], result_commit[20];
@@ -808,6 +834,7 @@ static int merge_trivial(void)
        parent->next = xmalloc(sizeof(*parent->next));
        parent->next->item = remoteheads->item;
        parent->next->next = NULL;
+       run_prepare_commit_msg();
        commit_tree(merge_msg.buf, result_tree, parent, result_commit, NULL);
        finish(result_commit, "In-index merge");
        drop_save();
@@ -837,6 +864,7 @@ static int finish_automerge(struct commit_list *common,
        }
        free_commit_list(remoteheads);
        strbuf_addch(&merge_msg, '\n');
+       run_prepare_commit_msg();
        commit_tree(merge_msg.buf, result_tree, parents, result_commit, NULL);
        strbuf_addf(&buf, "Merge made by %s.", wt_strategy);
        finish(result_commit, buf.buf);
@@ -1318,14 +1346,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
                        die_errno("Could not write to '%s'", git_path("MERGE_HEAD"));
                close(fd);
                strbuf_addch(&merge_msg, '\n');
-               fd = open(git_path("MERGE_MSG"), O_WRONLY | O_CREAT, 0666);
-               if (fd < 0)
-                       die_errno("Could not open '%s' for writing",
-                                 git_path("MERGE_MSG"));
-               if (write_in_full(fd, merge_msg.buf, merge_msg.len) !=
-                       merge_msg.len)
-                       die_errno("Could not write to '%s'", git_path("MERGE_MSG"));
-               close(fd);
+               write_merge_msg();
                fd = open(git_path("MERGE_MODE"), O_WRONLY | O_CREAT | O_TRUNC, 0666);
                if (fd < 0)
                        die_errno("Could not open '%s' for writing",