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get_tree_entry: map blank requested entry to tree root 

This means that
  git show HEAD:
will now return HEAD^{tree}, which is logically consistent with
  git show HEAD:Documentation

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
maint
Jeff King 2007-01-09 11:11:47 -05:00 committed by Junio C Hamano
parent 2740b2b853
commit d93b7d1c30
1 changed files with 8 additions and 1 deletions
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9
tree-walk.c
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@ -199,10 +199,17 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch
int retval; int retval;
void *tree; void *tree;
struct tree_desc t; struct tree_desc t;
unsigned char root[20];


tree = read_object_with_reference(tree_sha1, tree_type, &t.size, NULL); tree = read_object_with_reference(tree_sha1, tree_type, &t.size, root);
if (!tree) if (!tree)
return -1; return -1;

if (name[0] == '\0') {
hashcpy(sha1, root);
return 0;
}

t.buf = tree; t.buf = tree;
retval = find_tree_entry(&t, name, sha1, mode); retval = find_tree_entry(&t, name, sha1, mode);
free(tree); free(tree);