[PATCH] [GSoC] Add configuration options for some commonly used command-line options

[Koosha Khajehmoogahi]

This patch adds a 'showmerges' config. option for git-log.
This option determines whether the log should contain merge
commits or not. In essence, if this option is set to true,
git-log will be run as 'git-log --no-merges'.

Signed-off-by: Koosha Khajehmoogahi <koo...@posteo.de>
---
 Documentation/config.txt | 3 +++
 builtin/log.c            | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 1530255..7775b8c 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1735,6 +1735,9 @@ log.showroot::
        Tools like linkgit:git-log[1] or linkgit:git-whatchanged[1], which
        normally hide the root commit will now show it. True by default.
 
+log.showmerges::
+       If true, merges will be shown in the log list. True by default.
+
 log.mailmap::
        If true, makes linkgit:git-log[1], linkgit:git-show[1], and
        linkgit:git-whatchanged[1] assume `--use-mailmap`.
diff --git a/builtin/log.c b/builtin/log.c
index dd8f3fc..bb36f61 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -31,6 +31,7 @@ static const char *default_date_mode = NULL;
 
 static int default_abbrev_commit;
 static int default_show_root = 1;
+static int default_max_parents = -1;
 static int decoration_style;
 static int decoration_given;
 static int use_mailmap_config;
@@ -108,6 +109,7 @@ static void cmd_log_init_defaults(struct rev_info *rev)
        rev->diffopt.stat_graph_width = -1; /* respect statGraphWidth config */
        rev->abbrev_commit = default_abbrev_commit;
        rev->show_root_diff = default_show_root;
+       rev->max_parents = default_max_parents;
        rev->subject_prefix = fmt_patch_subject_prefix;
        DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
 
@@ -390,6 +392,12 @@ static int git_log_config(const char *var, const char 
*value, void *cb)
                default_show_root = git_config_bool(var, value);
                return 0;
        }
+
+       if (!strcmp(var, "log.showmerges")) {
+               default_max_parents = git_config_bool(var, value) ? -1 : 1;
+               return 0;
+       }
+
        if (skip_prefix(var, "color.decorate.", &slot_name))
                return parse_decorate_color_config(var, slot_name, value);
        if (!strcmp(var, "log.mailmap")) {
-- 
1.9.1



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