We have always set a global "spawned_pager" variable when we
start the pager. This lets us make the auto-color decision
later in the program as as "we are outputting to a terminal,
or to a pager which can handle colors".
Commit 6e9af86 added support for the GIT_PAGER_IN_USE
environment variable. An external program calling git (e.g.,
git-svn) could set this variable to indicate that it had
already started the pager, and that the decision about
auto-coloring should take that into account.
However, 6e9af86 failed to do the reverse, which is to tell
external programs when git itself has started the pager.
Thus a git command implemented as an external script that
has the pager turned on (e.g., "git -p stash show") would
not realize it was going to a pager, and would suppress
colors.
This patch remedies that; we always set GIT_PAGER_IN_USE
when we start the pager, and the value is respected by both
this program and any spawned children.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
pager.c | 8 +-------
t/t7006-pager.sh | 11 +++++++++++
2 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/pager.c b/pager.c
index dac358f..975955b 100644
--- a/pager.c
+++ b/pager.c
@@ -11,8 +11,6 @@
* something different on Windows.
*/
-static int spawned_pager;
-
#ifndef WIN32
static void pager_preexec(void)
{
@@ -78,7 +76,7 @@ void setup_pager(void)
if (!pager)
return;
- spawned_pager = 1; /* means we are emitting to terminal */
+ setenv("GIT_PAGER_IN_USE", "true", 1);
/* spawn the pager */
pager_argv[0] = pager;
@@ -109,10 +107,6 @@ void setup_pager(void)
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;
}
diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
index 2ac729f..4884e1b 100755
--- a/t/t7006-pager.sh
+++ b/t/t7006-pager.sh
@@ -181,6 +181,17 @@ test_expect_success 'color when writing to a file intended for a pager' '
colorful colorful.log
'
+test_expect_success TTY 'colors are sent to pager for external commands' '
+ test_config alias.externallog "!git log" &&
+ test_config color.ui auto &&
+ (
+ TERM=vt100 &&
+ export TERM &&
+ test_terminal git -p externallog
+ ) &&
+ colorful paginated.out
+'
+
# Use this helper to make it easy for the caller of your
# terminal-using function to specify whether it should fail.
# If you write
--
1.7.6.10.g62f04
--
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