setup.c: document get_pathspec()

diff --git a/merge-recursive.c b/merge-recursive.c
index e22a5195f65cac2872933b668180ceb3c80d3e7c..e02da3556d08f02abf87cb1ece75a2e1d0c8ab78 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -38,16 +38,15 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two,
        return lookup_tree(shifted);
 }
 
-/*
- * A virtual commit has (const char *)commit->util set to the name.
- */
-
 static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
 {
        struct commit *commit = xcalloc(1, sizeof(struct commit));
+       struct merge_remote_desc *desc = xmalloc(sizeof(*desc));
+
+       desc->name = comment;
+       desc->obj = (struct object *)commit;
        commit->tree = tree;
-       commit->util = (void*)comment;
-       /* avoid warnings */
+       commit->util = desc;
        commit->object.parsed = 1;
        return commit;
 }
@@ -184,7 +183,7 @@ static void output_commit_title(struct merge_options *o, struct commit *commit)
        for (i = o->call_depth; i--;)
                fputs("  ", stdout);
        if (commit->util)
-               printf("virtual %s\n", (char *)commit->util);
+               printf("virtual %s\n", merge_remote_util(commit)->name);
        else {
                printf("%s ", find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
                if (parse_commit(commit) != 0)
@@ -265,7 +264,7 @@ struct tree *write_tree_from_memory(struct merge_options *o)
 
        if (!cache_tree_fully_valid(active_cache_tree) &&
            cache_tree_update(active_cache_tree,
-                             active_cache, active_nr, 0, 0, 0) < 0)
+                             active_cache, active_nr, 0) < 0)
                die("error building trees");
 
        result = lookup_tree(active_cache_tree->sha1);
@@ -486,6 +485,7 @@ static struct string_list *get_renames(struct merge_options *o,
        renames = xcalloc(1, sizeof(struct string_list));
        diff_setup(&opts);
        DIFF_OPT_SET(&opts, RECURSIVE);
+       DIFF_OPT_CLR(&opts, RENAME_EMPTY);
        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 :
@@ -493,8 +493,7 @@ static struct string_list *get_renames(struct merge_options *o,
        opts.rename_score = o->rename_score;
        opts.show_rename_progress = o->show_rename_progress;
        opts.output_format = DIFF_FORMAT_NO_OUTPUT;
-       if (diff_setup_done(&opts) < 0)
-               die("diff setup failed");
+       diff_setup_done(&opts);
        diff_tree_sha1(o_tree->object.sha1, tree->object.sha1, "", &opts);
        diffcore_std(&opts);
        if (opts.needed_rename_limit > o->needed_rename_limit)
@@ -614,23 +613,6 @@ static char *unique_path(struct merge_options *o, const char *path, const char *
        return newpath;
 }
 
-static void flush_buffer(int fd, const char *buf, unsigned long size)
-{
-       while (size > 0) {
-               long ret = write_in_full(fd, buf, size);
-               if (ret < 0) {
-                       /* Ignore epipe */
-                       if (errno == EPIPE)
-                               break;
-                       die_errno("merge-recursive");
-               } else if (!ret) {
-                       die("merge-recursive: disk full?");
-               }
-               size -= ret;
-               buf += ret;
-       }
-}
-
 static int dir_in_way(const char *path, int check_working_copy)
 {
        int pos, pathlen = strlen(path);
@@ -789,7 +771,7 @@ static void update_file_flags(struct merge_options *o,
                        fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
                        if (fd < 0)
                                die_errno("failed to open '%s'", path);
-                       flush_buffer(fd, buf, size);
+                       write_in_full(fd, buf, size);
                        close(fd);
                } else if (S_ISLNK(mode)) {
                        char *lnk = xmemdupz(buf, size);
@@ -1915,7 +1897,7 @@ int merge_recursive(struct merge_options *o,
                /* if there is no common ancestor, use an empty tree */
                struct tree *tree;
 
-               tree = lookup_tree((const unsigned char *)EMPTY_TREE_SHA1_BIN);
+               tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
                merged_common_ancestors = make_virtual_commit(tree, "ancestor");
        }
 
@@ -2069,9 +2051,9 @@ int parse_merge_opt(struct merge_options *o, const char *s)
        else if (!prefixcmp(s, "subtree="))
                o->subtree_shift = s + strlen("subtree=");
        else if (!strcmp(s, "patience"))
-               o->xdl_opts |= XDF_PATIENCE_DIFF;
+               o->xdl_opts = DIFF_WITH_ALG(o, PATIENCE_DIFF);
        else if (!strcmp(s, "histogram"))
-               o->xdl_opts |= XDF_HISTOGRAM_DIFF;
+               o->xdl_opts = DIFF_WITH_ALG(o, HISTOGRAM_DIFF);
        else if (!strcmp(s, "ignore-space-change"))
                o->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
        else if (!strcmp(s, "ignore-all-space"))