log: flip the --mailmap default unconditionally

diff --git a/builtin/log.c b/builtin/log.c
index 7c8767d3bc781e132fdcb54edbfab2c856380e62..40b4cbf57de394ac916648ca6970db3286e800be 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -47,7 +47,7 @@ static int default_follow;
 static int default_show_signature;
 static int decoration_style;
 static int decoration_given;
-static int use_mailmap_config;
+static int use_mailmap_config = -1;
 static const char *fmt_patch_subject_prefix = "PATCH";
 static const char *fmt_pretty;
 
@@ -63,9 +63,14 @@ struct line_opt_callback_data {
        struct string_list args;
 };
 
+static int session_is_interactive(void)
+{
+       return isatty(1) || pager_in_use();
+}
+
 static int auto_decoration_style(void)
 {
-       return (isatty(1) || pager_in_use()) ? DECORATE_SHORT_REFS : 0;
+       return session_is_interactive() ? DECORATE_SHORT_REFS : 0;
 }
 
 static int parse_decoration_style(const char *value)
@@ -199,6 +204,9 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
        memset(&w, 0, sizeof(w));
        userformat_find_requirements(NULL, &w);
 
+       if (mailmap < 0)
+               mailmap = 0;
+
        if (!rev->show_notes_given && (!rev->pretty_given || w.notes))
                rev->show_notes = 1;
        if (rev->show_notes)