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git add: do not add files from a submodule

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It comes quite as a surprise to an unsuspecting Git user that calling
"git add submodule/file" (which is a mistake, alright) _removes_
the submodule in the index, and adds the file.  Instead, complain loudly.

While at it, be nice when the user said "git add submodule/" which is
most likely the consequence of tab-completion, and stage the submodule,
instead of trying to add the contents of that directory.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin
2009-01-02 19:08:40 +01:00
committed by Junio C Hamano
parent 8104ebfe82
commit 2ce53f9b77
2 changed files with 53 additions and 0 deletions
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28
builtin-add.c
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@ -68,6 +68,33 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
free(seen);
}
static void treat_gitlinks(const char **pathspec)
{
int i;
if (!pathspec || !*pathspec)
return;
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (S_ISGITLINK(ce->ce_mode)) {
int len = ce_namelen(ce), j;
for (j = 0; pathspec[j]; j++) {
int len2 = strlen(pathspec[j]);
if (len2 <= len || pathspec[j][len] != '/' ||
memcmp(ce->name, pathspec[j], len))
continue;
if (len2 == len + 1)
/* strip trailing slash */
pathspec[j] = xstrndup(ce->name, len);
else
die ("Path '%s' is in submodule '%.*s'",
pathspec[j], len, ce->name);
}
}
}
}
static void fill_directory(struct dir_struct *dir, const char **pathspec,
int ignored_too)
{
@ -261,6 +288,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
if (read_cache() < 0)
die("index file corrupt");
treat_gitlinks(pathspec);
if (add_new_files)
/* This picks up the paths that are not tracked */