When adding files to the index, add support for case-independent matches

This simplifies the matching case of "I already have this file and it is
up-to-date" and makes it do the right thing in the face of
case-insensitive aliases.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/read-cache.c b/read-cache.c
index 5dc998d21e79a8950896e7bb0db38cb137faacc1..8c57adfa166844ec00904187393d97cc7973dd47 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -431,9 +431,9 @@ static int index_name_pos_also_unmerged(struct index_state *istate,
 
 int add_file_to_index(struct index_state *istate, const char *path, int verbose)
 {
-       int size, namelen, pos;
+       int size, namelen;
        struct stat st;
-       struct cache_entry *ce;
+       struct cache_entry *ce, *alias;
        unsigned ce_option = CE_MATCH_IGNORE_VALID|CE_MATCH_RACY_IS_DIRTY;
 
        if (lstat(path, &st))
@@ -466,13 +466,11 @@ int add_file_to_index(struct index_state *istate, const char *path, int verbose)
                ce->ce_mode = ce_mode_from_stat(ent, st.st_mode);
        }
 
-       pos = index_name_pos(istate, ce->name, namelen);
-       if (0 <= pos &&
-           !ce_stage(istate->cache[pos]) &&
-           !ie_match_stat(istate, istate->cache[pos], &st, ce_option)) {
+       alias = index_name_exists(istate, ce->name, ce_namelen(ce), ignore_case);
+       if (alias && !ce_stage(alias) && !ie_match_stat(istate, alias, &st, ce_option)) {
                /* Nothing changed, really */
                free(ce);
-               ce_mark_uptodate(istate->cache[pos]);
+               ce_mark_uptodate(alias);
                return 0;
        }