When inserting a index entry of stage 0, remove all old unmerged entries.

This allows you to actually tell git that you've resolved a conflict.

diff --git a/read-cache.c b/read-cache.c
index acc6e23..5b4ab03 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -355,17 +355,30 @@ int cache_name_pos(const char *name, int namelen)
        return -first-1;
 }
 
+/* Remove entry, return true if there are more entries to go.. */
+static int remove_entry_at(int pos)
+{
+       active_nr--;
+       if (pos >= active_nr)
+               return 0;
+       memmove(active_cache + pos, active_cache + pos + 1, (active_nr - pos) * sizeof(struct cache_entry *));
+       return 1;
+}
+
 int remove_file_from_cache(char *path)
 {
        int pos = cache_name_pos(path, strlen(path));
-       if (pos >= 0) {
-               active_nr--;
-               if (pos < active_nr)
-                       memmove(active_cache + pos, active_cache + pos + 1, (active_nr - pos) * sizeof(struct cache_entry *));
-       }
+       if (pos >= 0)
+               remove_entry_at(pos);
        return 0;
 }
 
+static int same_name(struct cache_entry *a, struct cache_entry *b)
+{
+       int len = ce_namelen(a);
+       return ce_namelen(b) == len && !memcmp(a->name, b->name, len);
+}
+
 int add_cache_entry(struct cache_entry *ce, int ok_to_add)
 {
        int pos;
@@ -379,6 +392,19 @@ int add_cache_entry(struct cache_entry *ce, int ok_to_add)
        }
        pos = -pos-1;
 
+       /*
+        * Inserting a merged entry ("stage 0") into the index
+        * will always replace all non-merged entries..
+        */
+       if (pos < active_nr && ce_stage(ce) == 0) {
+               while (same_name(active_cache[pos], ce)) {
+                       ok_to_add = 1;
+                       active_nr--;
+                       if (!remove_entry_at(pos))
+                               break;
+               }
+       }
+
        if (!ok_to_add)
                return -1;