Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index

* ew/empty-merge-with-dirty-index-maint:
merge-recursive: do not look at the index during recursive merge

diff --combined merge-recursive.c
index 780f81a8bd3a729502cf2211a63135e4fba5d6cf,c571778f962a52092e916390a40c489b6746f20e..0fc580d8ca97c77d436f3351993300d19acd1ccc
--- 1/merge-recursive.c
--- 2/merge-recursive.c
+++ b/merge-recursive.c
@@@ -540,8 -540,8 +540,8 @@@ static struct string_list *get_renames(
                return renames;
  
        diff_setup(&opts);
 -      DIFF_OPT_SET(&opts, RECURSIVE);
 -      DIFF_OPT_CLR(&opts, RENAME_EMPTY);
 +      opts.flags.recursive = 1;
 +      opts.flags.rename_empty = 0;
        opts.detect_rename = DIFF_DETECT_RENAME;
        opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit :
                            o->diff_rename_limit >= 0 ? o->diff_rename_limit :
@@@ -646,7 -646,7 +646,7 @@@ static int remove_file(struct merge_opt
                if (ignore_case) {
                        struct cache_entry *ce;
                        ce = cache_file_exists(path, strlen(path), ignore_case);
 -                      if (ce && ce_stage(ce) == 0)
 +                      if (ce && ce_stage(ce) == 0 && strcmp(path, ce->name))
                                return 0;
                }
                if (remove_path(path))
@@@ -1954,7 -1954,7 +1954,7 @@@ int merge_trees(struct merge_options *o
        if (oid_eq(&common->object.oid, &merge->object.oid)) {
                struct strbuf sb = STRBUF_INIT;
  
-               if (index_has_changes(&sb)) {
+               if (!o->call_depth && index_has_changes(&sb)) {
                        err(o, _("Dirty index: cannot merge (dirty: %s)"),
                            sb.buf);
                        return 0;
@@@ -2089,7 -2089,7 +2089,7 @@@ int merge_recursive(struct merge_option
                /* if there is no common ancestor, use an empty tree */
                struct tree *tree;
  
 -              tree = lookup_tree(&empty_tree_oid);
 +              tree = lookup_tree(the_hash_algo->empty_tree);
                merged_common_ancestors = make_virtual_commit(tree, "ancestor");
        }
  
@@@ -2170,7 -2170,7 +2170,7 @@@ int merge_recursive_generic(struct merg
                            struct commit **result)
  {
        int clean;
 -      struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
 +      struct lock_file lock = LOCK_INIT;
        struct commit *head_commit = get_ref(head, o->branch1);
        struct commit *next_commit = get_ref(merge, o->branch2);
        struct commit_list *ca = NULL;
@@@ -2186,14 -2186,14 +2186,14 @@@
                }
        }
  
 -      hold_locked_index(lock, LOCK_DIE_ON_ERROR);
 +      hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
        clean = merge_recursive(o, head_commit, next_commit, ca,
                        result);
        if (clean < 0)
                return clean;
  
        if (active_cache_changed &&
 -          write_locked_index(&the_index, lock, COMMIT_LOCK))
 +          write_locked_index(&the_index, &lock, COMMIT_LOCK))
                return err(o, _("Unable to write index."));
  
        return clean ? 0 : 1;
@@@ -2209,7 -2209,6 +2209,7 @@@ static void merge_recursive_config(stru
  
  void init_merge_options(struct merge_options *o)
  {
 +      const char *merge_verbosity;
        memset(o, 0, sizeof(struct merge_options));
        o->verbosity = 2;
        o->buffer_output = 1;
@@@ -2218,9 -2217,9 +2218,9 @@@
        o->renormalize = 0;
        o->detect_rename = 1;
        merge_recursive_config(o);
 -      if (getenv("GIT_MERGE_VERBOSITY"))
 -              o->verbosity =
 -                      strtol(getenv("GIT_MERGE_VERBOSITY"), NULL, 10);
 +      merge_verbosity = getenv("GIT_MERGE_VERBOSITY");
 +      if (merge_verbosity)
 +              o->verbosity = strtol(merge_verbosity, NULL, 10);
        if (o->verbosity >= 5)
                o->buffer_output = 0;
        strbuf_init(&o->obuf, 0);
@@@ -2260,8 -2259,6 +2260,8 @@@ int parse_merge_opt(struct merge_option
                DIFF_XDL_SET(o, IGNORE_WHITESPACE);
        else if (!strcmp(s, "ignore-space-at-eol"))
                DIFF_XDL_SET(o, IGNORE_WHITESPACE_AT_EOL);
 +      else if (!strcmp(s, "ignore-cr-at-eol"))
 +              DIFF_XDL_SET(o, IGNORE_CR_AT_EOL);
        else if (!strcmp(s, "renormalize"))
                o->renormalize = 1;
        else if (!strcmp(s, "no-renormalize"))