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print_sha1_ellipsis: introduce helper

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Introduce a helper print_sha1_ellipsis() that pays attention to the
GIT_PRINT_SHA1_ELLIPSIS environment variable, and prepare the tests to
unconditionally set it for the test pieces that will be broken once the code
stops showing the extra dots by default.

The removal of these dots is merely a plan at this step and has not happened
yet but soon will.

Document GIT_PRINT_SHA1_ELLIPSIS.

Signed-off-by: Ann T Ropea <bedhanger@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ann T Ropea
2017-12-03 22:27:39 +01:00
committed by Junio C Hamano
parent f61d89e100
commit a2cd709de3
6 changed files with 33 additions and 3 deletions
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15
environment.c
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@ -343,3 +343,18 @@ int use_optional_locks(void)
{
return git_env_bool(GIT_OPTIONAL_LOCKS_ENVIRONMENT, 1);
}
int print_sha1_ellipsis(void)
{
/*
* Determine if the calling environment contains the variable
* GIT_PRINT_SHA1_ELLIPSIS set to "yes".
*/
static int cached_result = -1; /* unknown */
if (cached_result < 0) {
const char *v = getenv("GIT_PRINT_SHA1_ELLIPSIS");
cached_result = (v && !strcasecmp(v, "yes"));
}
return cached_result;
}