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git: treat "git -C '<path>'" as a no-op when <path> is empty

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'git -C ""' unhelpfully dies with error "Cannot change to ''",
whereas the shell treats `cd ""' as a no-op.  Taking the shell's
behavior as a precedent, teach git to treat `-C ""' as a no-op, as
well.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Karthik Nayak
2015-03-06 16:48:08 +05:30
committed by Junio C Hamano
parent 9874fca712
commit 6a536e2076
2 changed files with 16 additions and 4 deletions
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10
git.c
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@ -204,10 +204,12 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
fprintf(stderr, "No directory given for -C.\n" );
usage(git_usage_string);
}
if (chdir((*argv)[1]))
die_errno("Cannot change to '%s'", (*argv)[1]);
if (envchanged)
*envchanged = 1;
if ((*argv)[1][0]) {
if (chdir((*argv)[1]))
die_errno("Cannot change to '%s'", (*argv)[1]);
if (envchanged)
*envchanged = 1;
}
(*argv)++;
(*argc)--;
} else {