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checkout: proper error message on 'git checkout foo bar --'

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The previous code was detecting the presence of "--" by looking only at
argument 1. As a result, "git checkout foo bar --" was interpreted as an
ambiguous file/revision list, and errored out with:

error: pathspec 'foo' did not match any file(s) known to git.
error: pathspec 'bar' did not match any file(s) known to git.
error: pathspec '--' did not match any file(s) known to git.

This patch fixes it by walking through the argument list to find the
"--", and now complains about the number of references given.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matthieu Moy 2013-10-18 11:25:58 +02:00 committed by Junio C Hamano
parent a047fafc78
commit bca3969534
2 changed files with 22 additions and 5 deletions
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21
builtin/checkout.c
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@ -872,7 +872,9 @@ static int parse_branchname_arg(int argc, const char **argv,
int argcount = 0;
unsigned char branch_rev[20];
const char *arg;
int has_dash_dash;
int dash_dash_pos;
int has_dash_dash = 0;
int i;
/*
* case 1: git checkout <ref> -- [<paths>]
@ -916,11 +918,20 @@ static int parse_branchname_arg(int argc, const char **argv,
if (!argc)
return 0;
if (!strcmp(argv[0], "--")) /* case (2) */
return 1;
arg = argv[0];
has_dash_dash = (argc > 1) && !strcmp(argv[1], "--");
dash_dash_pos = -1;
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
dash_dash_pos = i;
break;
}
}
if (dash_dash_pos == 0)
return 1; /* case (2) */
else if (dash_dash_pos == 1)
has_dash_dash = 1; /* case (3) or (1) */
else if (dash_dash_pos >= 2)
die(_("only one reference expected, %d given."), dash_dash_pos);
if (!strcmp(arg, "-"))
arg = "@{-1}";

6
t/t2010-checkout-ambiguous.sh
View File

@ -47,4 +47,10 @@ test_expect_success 'disambiguate checking out from a tree-ish' '
git diff --exit-code --quiet
'
test_expect_success 'accurate error message with more than one ref' '
test_must_fail git checkout HEAD master -- 2>actual &&
grep 2 actual &&
test_i18ngrep "one reference expected, 2 given" actual
'
test_done