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-rw-r--r--crawl-ref/source/cio.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/crawl-ref/source/cio.cc b/crawl-ref/source/cio.cc
index 91f1ddd295..df1b10a4de 100644
--- a/crawl-ref/source/cio.cc
+++ b/crawl-ref/source/cio.cc
@@ -364,6 +364,7 @@ void line_reader::backspace()
{
if (pos)
{
+ buffer[length] = 0;
--cur;
char *c = cur;
while (*c)