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Detailed diagnosis when parsing an object name fails.

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The previous error message was the same in many situations (unknown
revision or path not in the working tree). We try to help the user as
much as possible to understand the error, especially with the
sha1:filename notation. In this case, we say whether the sha1 or the
filename is problematic, and diagnose the confusion between
relative-to-root and relative-to-$PWD confusion precisely.

The 7 new error messages are tested.

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
2009-12-07 11:10:50 +01:00
committed by Junio C Hamano
parent 9a424b276c
commit 009fee4774
4 changed files with 198 additions and 7 deletions
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15
setup.c
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@ -74,6 +74,18 @@ int check_filename(const char *prefix, const char *arg)
die_errno("failed to stat '%s'", arg);
}
static void NORETURN die_verify_filename(const char *prefix, const char *arg)
{
unsigned char sha1[20];
unsigned mode;
/* try a detailed diagnostic ... */
get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix);
/* ... or fall back the most general message. */
die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
"Use '--' to separate paths from revisions", arg);
}
/*
* Verify a filename that we got as an argument for a pathspec
* entry. Note that a filename that begins with "-" never verifies
@ -87,8 +99,7 @@ void verify_filename(const char *prefix, const char *arg)
die("bad flag '%s' used after filename", arg);
if (check_filename(prefix, arg))
return;
die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
"Use '--' to separate paths from revisions", arg);
die_verify_filename(prefix, arg);
}
/*