[PATCH v5 7/8] various *.c: use isatty(1|2), not isatty(STDIN_FILENO|STDERR_FILENO)

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We have over 50 uses of "isatty(1)" and "isatty(2)" in the codebase,
only these two used the stdlib.h macros to refer to them.

Let's change these for consistency, and because a subsequent commit's
commit message outlines a recipe to change all of these for ad-hoc
testing, not needing to match these with that ad-hoc regex will make
things easier to explain.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 builtin/bisect--helper.c | 2 +-
 builtin/bundle.c         | 2 +-
 compat/mingw.c           | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 28a2e6a5750..1727cb051fb 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -830,7 +830,7 @@ static int bisect_autostart(struct bisect_terms *terms)
 	fprintf_ln(stderr, _("You need to start by \"git bisect "
 			  "start\"\n"));
 
-	if (!isatty(STDIN_FILENO))
+	if (!isatty(1))
 		return -1;
 
 	/*
diff --git a/builtin/bundle.c b/builtin/bundle.c
index 5a85d7cd0fe..df69c651753 100644
--- a/builtin/bundle.c
+++ b/builtin/bundle.c
@@ -56,7 +56,7 @@ static int parse_options_cmd_bundle(int argc,
 
 static int cmd_bundle_create(int argc, const char **argv, const char *prefix) {
 	int all_progress_implied = 0;
-	int progress = isatty(STDERR_FILENO);
+	int progress = isatty(2);
 	struct strvec pack_opts;
 	int version = -1;
 	int ret;
diff --git a/compat/mingw.c b/compat/mingw.c
index 9e0cd1e097f..0f545c1a7d1 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -2374,7 +2374,7 @@ int mingw_raise(int sig)
 	switch (sig) {
 	case SIGALRM:
 		if (timer_fn == SIG_DFL) {
-			if (isatty(STDERR_FILENO))
+			if (isatty(2))
 				fputs("Alarm clock\n", stderr);
 			exit(128 + SIGALRM);
 		} else if (timer_fn != SIG_IGN)
-- 
2.33.1.1570.g069344fdd45




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