Add mark range function

Sets the marked state of all images ranging from the latest marked/unmarked
image to the current image, to the state of that latest toggled image.

1 files changed, 1 insertions, 0 deletions

diff --git a/main.c b/main.c
index a9c9c44..b362c3e 100644
--- a/main.c
+++ b/main.c
@@ -57,6 +57,7 @@ fileinfo_t *files;
 int filecnt, fileidx;
 int alternate;
 int markcnt;
+int toggledidx = -1;
 
 int prefix;
 bool extprefix;