ui-log: Implement support for commit graphs

Teach CGit to print an ASCII art commit graph to the left of the commit
message, similar to 'git log --graph'. The graph adds extra lines (table
rows) to the log when needed to add/remove/shuffle edges in the graph.

When 'showmsg' is enabled, the graph is automatically padded to account
for the extra lines added by the commit message/notes.

This feature is controlled by a new config variable: "enable-commit-graph"
(disabled by default), and individual repos can control it by setting
"repo.enable-commit-graph".

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/cgit.css b/cgit.css
index 7a5f423..7600e84 100644
--- a/cgit.css
+++ b/cgit.css
@@ -155,2 +155,7 @@ table.list td {
 
+table.list td.commitgraph {
+        font-family: monospace;
+        white-space: pre;
+}
+
 table.list td.logsubject {
@@ -733,2 +738,2 @@ table.ssdiff td.space div {
         min-height: 3em;
-}
\ No newline at end of file
+}