Jump from blame to commit

Closes #355

Author: koutcher

NEWS.adoc

@@ -4,6 +4,10 @@ Release notes
 master
 ------
 
+Improvements:
+
+ - Jump from blame to commit. (#355)
+
 Bug fixes:
 
  - Fix wrapping of lines with multibyte characters. (#988)

include/tig/argv.h

@@ -60,6 +60,7 @@ typedef unsigned long argv_number;
 struct argv_env {
 	ARGV_ENV_INFO(ARGV_ENV_FIELDS)
 	unsigned long goto_lineno;
+	char goto_id[SIZEOF_REV];
 	char search[SIZEOF_STR];
 	char none[1];
 };

src/blame.c

@@ -21,6 +21,7 @@
 #include "tig/draw.h"
 #include "tig/git.h"
 #include "tig/diff.h"
+#include "tig/main.h"
 
 /*
  * Blame backend
@@ -499,6 +500,11 @@ blame_request(struct view *view, enum request request, struct line *line)
 		}
 		break;
 
+	case REQ_VIEW_MAIN:
+		string_copy_rev(view->env->goto_id, view->env->commit);
+		open_main_view(view, OPEN_RELOAD);
+		break;
+
 	default:
 		return request;
 	}

src/main.c

@@ -98,7 +98,8 @@ main_add_commit(struct view *view, enum line_type type, struct commit *template,
 
 	view_column_info_update(view, line);
 
-	if (opt_start_on_head && is_head_commit(commit->id))
+	if ((opt_start_on_head && is_head_commit(commit->id)) ||
+	    (view->env->goto_id[0] && !strncmp(view->env->goto_id, commit->id, SIZEOF_REV - 1)))
 		select_view_line(view, line->lineno + 1);
 
 	return commit;