bash: teach __git_ps1 about REVERT_HEAD

diff --git a/graph.c b/graph.c
index 2f6893dc4f97dfbccad6f22f66861c24021a3c46..b24d04c4066dd4d09200bb27d09c91d93c1bb5b0 100644 (file)
--- a/graph.c
+++ b/graph.c
@@ -194,8 +194,10 @@ static struct strbuf *diff_output_prefix_callback(struct diff_options *opt, void
        struct git_graph *graph = data;
        static struct strbuf msgbuf = STRBUF_INIT;
 
+       assert(opt);
        assert(graph);
 
+       opt->output_prefix_length = graph->width;
        strbuf_reset(&msgbuf);
        graph_padding_line(graph, &msgbuf);
        return &msgbuf;
@@ -245,6 +247,7 @@ struct git_graph *graph_init(struct rev_info *opt)
         */
        opt->diffopt.output_prefix = diff_output_prefix_callback;
        opt->diffopt.output_prefix_data = graph;
+       opt->diffopt.output_prefix_length = 0;
 
        return graph;
 }
@@ -347,7 +350,7 @@ static struct commit_list *first_interesting_parent(struct git_graph *graph)
 
 static unsigned short graph_get_current_column_color(const struct git_graph *graph)
 {
-       if (!DIFF_OPT_TST(&graph->revs->diffopt, COLOR_DIFF))
+       if (!want_color(graph->revs->diffopt.use_color))
                return column_colors_max;
        return graph->default_column_color;
 }
@@ -1196,7 +1199,17 @@ void graph_show_commit(struct git_graph *graph)
        if (!graph)
                return;
 
-       while (!shown_commit_line) {
+       /*
+        * When showing a diff of a merge against each of its parents, we
+        * are called once for each parent without graph_update having been
+        * called.  In this case, simply output a single padding line.
+        */
+       if (graph_is_commit_finished(graph)) {
+               graph_show_padding(graph);
+               shown_commit_line = 1;
+       }
+
+       while (!shown_commit_line && !graph_is_commit_finished(graph)) {
                shown_commit_line = graph_next_line(graph, &msgbuf);
                fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
                if (!shown_commit_line)