From ec9007f0512930bc16f23e97ea626799187700b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Tue, 21 Feb 2017 14:47:05 +0100
Subject: sam: make sure all commands can be undone

Take a snapshot before and after processing the transcript.
---
 sam.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'sam.c')

diff --git a/sam.c b/sam.c
index d1cc637..fc41e57 100644
--- a/sam.c
+++ b/sam.c
@@ -1137,6 +1137,7 @@ enum SamError sam_cmd(Vis *vis, const char *s) {
 			err = t->error;
 			continue;
 		}
+		vis_file_snapshot(vis, file);
 		ptrdiff_t delta = 0;
 		for (Change *c = t->changes; c; c = c->next) {
 			c->range.start += delta;
@@ -1176,6 +1177,7 @@ enum SamError sam_cmd(Vis *vis, const char *s) {
 			}
 		}
 		sam_transcript_free(&file->transcript);
+		vis_file_snapshot(vis, file);
 	}
 
 	if (vis->win) {
-- 
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