grep: rip out pessimization to use fixmatch()

diff --git a/diff-lib.c b/diff-lib.c
index 22da66ef145b3b1642b90e113a4659b43366d452..adf1c5fdee2bc836f03eaa89160573973bb46a67 100644 (file)
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -309,22 +309,6 @@ static int show_modified(struct rev_info *revs,
        return 0;
 }
 
-/*
- * This turns all merge entries into "stage 3". That guarantees that
- * when we read in the new tree (into "stage 1"), we won't lose sight
- * of the fact that we had unmerged entries.
- */
-static void mark_merge_entries(void)
-{
-       int i;
-       for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
-               if (!ce_stage(ce))
-                       continue;
-               ce->ce_flags |= CE_STAGEMASK;
-       }
-}
-
 /*
  * This gets a mix of an existing index and a tree, one pathname entry
  * at a time. The index entry may be a single stage-0 one, but it could
@@ -350,8 +334,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
        match_missing = !revs->ignore_merges;
 
        if (cached && idx && ce_stage(idx)) {
-               if (tree)
-                       diff_unmerge(&revs->diffopt, idx->name, idx->ce_mode, idx->sha1);
+               diff_unmerge(&revs->diffopt, idx->name, idx->ce_mode,
+                            idx->sha1);
                return;
        }
 
@@ -399,7 +383,7 @@ static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_op
  * For diffing, the index is more important, and we only have a
  * single tree.
  *
- * We're supposed to return how many index entries we want to skip.
+ * We're supposed to advance o->pos to skip what we have already processed.
  *
  * This wrapper makes it all more readable, and takes care of all
  * the fairly complex unpack_trees() semantic requirements, including
@@ -437,8 +421,6 @@ int run_diff_index(struct rev_info *revs, int cached)
        struct unpack_trees_options opts;
        struct tree_desc t;
 
-       mark_merge_entries();
-
        ent = revs->pending.objects[0].item;
        tree_name = revs->pending.objects[0].name;
        tree = parse_tree_indirect(ent->sha1);