unpack-trees: do not muck with attributes when we are not checking out

diff --git a/diff.c b/diff.c
index 11798af0c190f369e8ac9cb0463f794bc3bb5d10..3ac71686ebef3d3f9c8b0b72adf612e9535031a5 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -30,14 +30,14 @@ int diff_auto_refresh_index = 1;
 static int diff_mnemonic_prefix;
 
 static char diff_colors[][COLOR_MAXLEN] = {
-       "\033[m",       /* reset */
-       "",             /* PLAIN (normal) */
-       "\033[1m",      /* METAINFO (bold) */
-       "\033[36m",     /* FRAGINFO (cyan) */
-       "\033[31m",     /* OLD (red) */
-       "\033[32m",     /* NEW (green) */
-       "\033[33m",     /* COMMIT (yellow) */
-       "\033[41m",     /* WHITESPACE (red background) */
+       GIT_COLOR_RESET,
+       GIT_COLOR_NORMAL,       /* PLAIN */
+       GIT_COLOR_BOLD,         /* METAINFO */
+       GIT_COLOR_CYAN,         /* FRAGINFO */
+       GIT_COLOR_RED,          /* OLD */
+       GIT_COLOR_GREEN,        /* NEW */
+       GIT_COLOR_YELLOW,       /* COMMIT */
+       GIT_COLOR_BG_RED,       /* WHITESPACE */
 };
 
 static void diff_filespec_load_driver(struct diff_filespec *one);
@@ -62,6 +62,15 @@ static int parse_diff_color_slot(const char *var, int ofs)
        die("bad config variable '%s'", var);
 }
 
+static int git_config_rename(const char *var, const char *value)
+{
+       if (!value)
+               return DIFF_DETECT_RENAME;
+       if (!strcasecmp(value, "copies") || !strcasecmp(value, "copy"))
+               return  DIFF_DETECT_COPY;
+       return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0;
+}
+
 /*
  * These are to give UI layer defaults.
  * The core-level commands such as git-diff-files should
@@ -75,13 +84,7 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
                return 0;
        }
        if (!strcmp(var, "diff.renames")) {
-               if (!value)
-                       diff_detect_rename_default = DIFF_DETECT_RENAME;
-               else if (!strcasecmp(value, "copies") ||
-                        !strcasecmp(value, "copy"))
-                       diff_detect_rename_default = DIFF_DETECT_COPY;
-               else if (git_config_bool(var,value))
-                       diff_detect_rename_default = DIFF_DETECT_RENAME;
+               diff_detect_rename_default = git_config_rename(var, value);
                return 0;
        }
        if (!strcmp(var, "diff.autorefreshindex")) {
@@ -875,7 +878,7 @@ static void fill_print_name(struct diffstat_file *file)
 
 static void show_stats(struct diffstat_t* data, struct diff_options *options)
 {
-       int i, len, add, del, total, adds = 0, dels = 0;
+       int i, len, add, del, adds = 0, dels = 0;
        int max_change = 0, max_len = 0;
        int total_files = data->nr;
        int width, name_width;
@@ -978,14 +981,12 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options)
                 */
                add = added;
                del = deleted;
-               total = add + del;
                adds += add;
                dels += del;
 
                if (width <= max_change) {
                        add = scale_linear(add, width, max_change);
                        del = scale_linear(del, width, max_change);
-                       total = add + del;
                }
                show_name(options->file, prefix, name, len, reset, set);
                fprintf(options->file, "%5d%s", added + deleted,
@@ -1759,7 +1760,8 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
        struct stat st;
        int pos, len;
 
-       /* We do not read the cache ourselves here, because the
+       /*
+        * We do not read the cache ourselves here, because the
         * benchmark with my previous version that always reads cache
         * shows that it makes things worse for diff-tree comparing
         * two linux-2.6 kernel trees in an already checked out work
@@ -1783,7 +1785,7 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
         * objects however would tend to be slower as they need
         * to be individually opened and inflated.
         */
-       if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1, NULL))
+       if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1))
                return 0;
 
        len = strlen(name);
@@ -1799,6 +1801,13 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
        if (hashcmp(sha1, ce->sha1) || !S_ISREG(ce->ce_mode))
                return 0;
 
+       /*
+        * If ce is marked as "assume unchanged", there is no
+        * guarantee that work tree matches what we are looking for.
+        */
+       if (ce->ce_flags & CE_VALID)
+               return 0;
+
        /*
         * If ce matches the file in the work tree, we can reuse it.
         */
@@ -2574,13 +2583,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 
        /* xdiff options */
        else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
-               options->xdl_opts |= XDF_IGNORE_WHITESPACE;
+               DIFF_XDL_SET(options, IGNORE_WHITESPACE);
        else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
-               options->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
+               DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
        else if (!strcmp(arg, "--ignore-space-at-eol"))
-               options->xdl_opts |= XDF_IGNORE_WHITESPACE_AT_EOL;
+               DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
        else if (!strcmp(arg, "--patience"))
-               options->xdl_opts |= XDF_PATIENCE_DIFF;
+               DIFF_XDL_SET(options, PATIENCE_DIFF);
 
        /* flags options */
        else if (!strcmp(arg, "--binary")) {
@@ -2601,10 +2610,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                DIFF_OPT_SET(options, COLOR_DIFF);
        else if (!strcmp(arg, "--no-color"))
                DIFF_OPT_CLR(options, COLOR_DIFF);
-       else if (!strcmp(arg, "--color-words"))
-               options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS;
+       else if (!strcmp(arg, "--color-words")) {
+               DIFF_OPT_SET(options, COLOR_DIFF);
+               DIFF_OPT_SET(options, COLOR_DIFF_WORDS);
+       }
        else if (!prefixcmp(arg, "--color-words=")) {
-               options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS;
+               DIFF_OPT_SET(options, COLOR_DIFF);
+               DIFF_OPT_SET(options, COLOR_DIFF_WORDS);
                options->word_regex = arg + 14;
        }
        else if (!strcmp(arg, "--exit-code"))