[[TIG][PATCH] 2/3] Display correct diff the context in split log view

[Kumar Appaiah <a.kumar@alumni.iitm.ac.in>]

In the log view, when scrolling across a commit, the diff view should
automatically switch to the commit whose context the cursor is on in
the log view. This commit changes things to catch the REQ_ENTER in the
log view and handle recalculation of the commit and diff display from
log_request, rather than delegating it to pager_request. In addition,
it also gets rid of unexpected upward scrolling of the log view.

Fixes GH #155

Signed-Off-By: Kumar Appaiah <a.kumar@alumni.iitm.ac.in>
---
 NEWS  |  1 +
 tig.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/NEWS b/NEWS
index 0394407..f59e517 100644
--- a/NEWS
+++ b/NEWS
@@ -46,6 +46,7 @@ Bug fixes:
  - Fix rendering glitch for branch names.
  - Do not apply diff styling to untracked files in the stage view. (GH #153)
  - Fix tree indentation for entries containing combining characters. (GH #170)
+ - Introduce a more natural context-sensitive log display. (GH #155)
 
 tig-1.1
 -------
diff --git a/tig.c b/tig.c
index dd4b0f4..53947b7 100644
--- a/tig.c
+++ b/tig.c
@@ -4478,6 +4478,18 @@ log_request(struct view *view, enum request request, struct line *line)
 		state->update_commit_ref = TRUE;
 		return pager_request(view, request, line);
 
+	case REQ_ENTER:
+		/* Recalculate the correct commit for the context. */
+		state->update_commit_ref = TRUE;
+
+		open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
+		update_view_title(view);
+
+		/* We don't want to delegate this to pager_request,
+		   since we don't want the extra scrolling of the log
+		   view. */
+		return REQ_NONE;
+
 	default:
 		return pager_request(view, request, line);
 	}
-- 
1.8.3.2