From 6e9af863ee76423ec8416ad16140ef5f810783bf Mon Sep 17 00:00:00 2001 From: Jeff King Date: Tue, 11 Dec 2007 01:27:33 -0500 Subject: [PATCH] Support GIT_PAGER_IN_USE environment variable When deciding whether or not to turn on automatic color support, git_config_colorbool checks whether stdout is a tty. However, because we run a pager, if stdout is not a tty, we must check whether it is because we started the pager. This used to be done by checking the pager_in_use variable. This variable was set only when the git program being run started the pager; there was no way for an external program running git indicate that it had already started a pager. This patch allows a program to set GIT_PAGER_IN_USE to a true value to indicate that even though stdout is not a tty, it is because a pager is being used. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- cache.h | 2 +- color.c | 2 +- environment.c | 1 - pager.c | 15 ++++++++++++++- 4 files changed, 16 insertions(+), 4 deletions(-) diff --git a/cache.h b/cache.h index 1bcb3df7a..27d90fe54 100644 --- a/cache.h +++ b/cache.h @@ -608,7 +608,7 @@ extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char /* pager.c */ extern void setup_pager(void); extern char *pager_program; -extern int pager_in_use; +extern int pager_in_use(void); extern int pager_use_color; extern char *editor_program; diff --git a/color.c b/color.c index 7bd424a8f..7f66c29fa 100644 --- a/color.c +++ b/color.c @@ -135,7 +135,7 @@ int git_config_colorbool(const char *var, const char *value, int stdout_is_tty) auto_color: if (stdout_is_tty < 0) stdout_is_tty = isatty(1); - if (stdout_is_tty || (pager_in_use && pager_use_color)) { + if (stdout_is_tty || (pager_in_use() && pager_use_color)) { char *term = getenv("TERM"); if (term && strcmp(term, "dumb")) return 1; diff --git a/environment.c b/environment.c index f3e3d4138..18a1c4eec 100644 --- a/environment.c +++ b/environment.c @@ -31,7 +31,6 @@ size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE; size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT; size_t delta_base_cache_limit = 16 * 1024 * 1024; char *pager_program; -int pager_in_use; int pager_use_color = 1; char *editor_program; char *excludes_file; diff --git a/pager.c b/pager.c index fb7a1a625..0376953cb 100644 --- a/pager.c +++ b/pager.c @@ -5,6 +5,8 @@ * something different on Windows, for example. */ +static int spawned_pager; + static void run_pager(const char *pager) { /* @@ -41,7 +43,7 @@ void setup_pager(void) else if (!*pager || !strcmp(pager, "cat")) return; - pager_in_use = 1; /* means we are emitting to terminal */ + spawned_pager = 1; /* means we are emitting to terminal */ if (pipe(fd) < 0) return; @@ -70,3 +72,14 @@ void setup_pager(void) die("unable to execute pager '%s'", pager); exit(255); } + +int pager_in_use(void) +{ + const char *env; + + if (spawned_pager) + return 1; + + env = getenv("GIT_PAGER_IN_USE"); + return env ? git_config_bool("GIT_PAGER_IN_USE", env) : 0; +} -- 2.30.2