From a7fff549aa5df2d23903308252da625b079b944f Mon Sep 17 00:00:00 2001
From: Jonas Fonseca <fonseca@diku.dk>
Date: Mon, 9 Feb 2009 04:04:40 +0100
Subject: [PATCH] Status view: upon failure to open a file show error message

---
 NEWS  |  1 +
 tig.c | 22 ++++++++++++++++------
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/NEWS b/NEWS
index ea3296c..f9b2e7f 100644
--- a/NEWS
+++ b/NEWS
@@ -14,6 +14,7 @@ Improvements:
 
 Bug fixes:
 
+ - Status view: show error when failing to open a file.
  - Blame view: fix problem with uninitialized variable.
  - Blame view: use line number information when loading blame for
    specific commit.
diff --git a/tig.c b/tig.c
index b09cbbf..aec50bc 100644
--- a/tig.c
+++ b/tig.c
@@ -398,6 +398,8 @@ io_open(struct io *io, const char *name)
 {
 	init_io(io, NULL, IO_FD);
 	io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
+	if (io->pipe == -1)
+		io->error = errno;
 	return io->pipe != -1;
 }
 
@@ -4901,6 +4903,15 @@ status_draw(struct view *view, struct line *line, unsigned int lineno)
 	return TRUE;
 }
 
+static enum request
+status_load_error(struct view *view, struct view *stage, const char *path)
+{
+	if (displayed_views() == 2 || display[current_view] != view)
+		maximize_view(view);
+	report("Failed to load '%s': %s", path, io_strerror(&stage->io));
+	return REQ_NONE;
+}
+
 static enum request
 status_enter(struct view *view, struct line *line)
 {
@@ -4928,7 +4939,7 @@ status_enter(struct view *view, struct line *line)
 			};
 
 			if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
-				return REQ_QUIT;
+				return status_load_error(view, stage, newpath);
 		} else {
 			const char *index_show_argv[] = {
 				"git", "diff-index", "--root", "--patch-with-stat",
@@ -4937,7 +4948,7 @@ status_enter(struct view *view, struct line *line)
 			};
 
 			if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
-				return REQ_QUIT;
+				return status_load_error(view, stage, newpath);
 		}
 
 		if (status)
@@ -4954,7 +4965,7 @@ status_enter(struct view *view, struct line *line)
 		};
 
 		if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
-			return REQ_QUIT;
+			return status_load_error(view, stage, newpath);
 		if (status)
 			info = "Unstaged changes to %s";
 		else
@@ -4973,7 +4984,7 @@ status_enter(struct view *view, struct line *line)
 		}
 
 		if (!prepare_update_file(stage, newpath))
-			return REQ_QUIT;
+			return status_load_error(view, stage, newpath);
 		info = "Untracked file %s";
 		break;
 
@@ -5232,8 +5243,7 @@ status_request(struct view *view, enum request request, struct line *line)
 		/* After returning the status view has been split to
 		 * show the stage view. No further reloading is
 		 * necessary. */
-		status_enter(view, line);
-		return REQ_NONE;
+		return status_enter(view, line);
 
 	case REQ_REFRESH:
 		/* Simply reload the view. */
-- 
2.30.2