+enum decoration_type {
+ DECORATION_NONE = 0,
+ DECORATION_REF_LOCAL,
+ DECORATION_REF_REMOTE,
+ DECORATION_REF_TAG,
+ DECORATION_REF_STASH,
+ DECORATION_REF_HEAD,
+};
+
+static char decoration_colors[][COLOR_MAXLEN] = {
+ GIT_COLOR_RESET,
+ GIT_COLOR_BOLD_GREEN, /* REF_LOCAL */
+ GIT_COLOR_BOLD_RED, /* REF_REMOTE */
+ GIT_COLOR_BOLD_YELLOW, /* REF_TAG */
+ GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */
+ GIT_COLOR_BOLD_CYAN, /* REF_HEAD */
+};
+
+static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)
+{
+ if (decorate_use_color)
+ return decoration_colors[ix];
+ return "";
+}
+
+static int parse_decorate_color_slot(const char *slot)
+{
+ /*
+ * We're comparing with 'ignore-case' on
+ * (because config.c sets them all tolower),
+ * but let's match the letters in the literal
+ * string values here with how they are
+ * documented in Documentation/config.txt, for
+ * consistency.
+ *
+ * We love being consistent, don't we?
+ */
+ if (!strcasecmp(slot, "branch"))
+ return DECORATION_REF_LOCAL;
+ if (!strcasecmp(slot, "remoteBranch"))
+ return DECORATION_REF_REMOTE;
+ if (!strcasecmp(slot, "tag"))
+ return DECORATION_REF_TAG;
+ if (!strcasecmp(slot, "stash"))
+ return DECORATION_REF_STASH;
+ if (!strcasecmp(slot, "HEAD"))
+ return DECORATION_REF_HEAD;
+ return -1;
+}
+
+int parse_decorate_color_config(const char *var, const int ofs, const char *value)
+{
+ int slot = parse_decorate_color_slot(var + ofs);
+ if (slot < 0)
+ return 0;
+ if (!value)
+ return config_error_nonbool(var);
+ color_parse(value, var, decoration_colors[slot]);
+ return 0;
+}
+
+/*
+ * log-tree.c uses DIFF_OPT_TST for determining whether to use color
+ * for showing the commit sha1, use the same check for --decorate
+ */
+#define decorate_get_color_opt(o, ix) \
+ decorate_get_color(DIFF_OPT_TST((o), COLOR_DIFF), ix)
+
+static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)