From 562197577b01aed5c98979a4fc90bf22662172cf Mon Sep 17 00:00:00 2001
From: Bastien Dejean <nihilhill@gmail.com>
Date: Thu, 14 Nov 2013 14:45:27 +0100
Subject: Add command to reverse marked images

---
 README.md    |  1 +
 commands.c   | 12 ++++++++++++
 commands.h   |  1 +
 config.def.h |  1 +
 sxiv.1       |  3 +++
 5 files changed, 18 insertions(+)

diff --git a/README.md b/README.md
index cda09ee..913deac 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,7 @@ of small previews is displayed, making it easy to choose an image to open.
     D            Remove image from file list and go to next image
 
     m            Mark/unmark current image
+    M            Reverse marked images
     N            Go [count] marked images forward
     P            Go [count] marked images backward
 
diff --git a/commands.c b/commands.c
index ff95f36..9dbe2c0 100644
--- a/commands.c
+++ b/commands.c
@@ -251,6 +251,18 @@ bool it_toggle_image_mark(arg_t a)
 	return true;
 }
 
+bool it_reverse_marks(arg_t a)
+{
+	int i, cnt = mode == MODE_IMAGE ? filecnt : tns.cnt;
+
+        for (i = 0; i < cnt; i++) {
+		files[i].marked = !files[i].marked;
+		markcnt += files[i].marked ? 1 : -1;
+        }
+
+	return true;
+}
+
 bool it_navigate_marked(arg_t a)
 {
 	long n = (long) a;
diff --git a/commands.h b/commands.h
index 118c89a..58bfafb 100644
--- a/commands.h
+++ b/commands.h
@@ -55,6 +55,7 @@ bool it_n_or_last(arg_t);
 bool i_navigate_frame(arg_t);
 bool i_toggle_animation(arg_t);
 bool it_toggle_image_mark(arg_t);
+bool it_reverse_marks(arg_t);
 bool it_navigate_marked(arg_t);
 bool it_scroll_move(arg_t);
 bool it_scroll_screen(arg_t);
diff --git a/config.def.h b/config.def.h
index f5d048a..c5e002f 100644
--- a/config.def.h
+++ b/config.def.h
@@ -95,6 +95,7 @@ static const keymap_t keys[] = {
 	{ true,   XK_space,         i_toggle_animation,   (arg_t) None },
 
 	{ false,  XK_m,             it_toggle_image_mark, (arg_t) None },
+	{ false,  XK_M,             it_reverse_marks,     (arg_t) None },
 	{ false,  XK_N,             it_navigate_marked,   (arg_t) +1 },
 	{ false,  XK_P,             it_navigate_marked,   (arg_t) -1 },
 
diff --git a/sxiv.1 b/sxiv.1
index ee42a00..f8ad0c1 100644
--- a/sxiv.1
+++ b/sxiv.1
@@ -130,6 +130,9 @@ Remove current image from file list and go to next image.
 .B m
 Mark/unmark the current image.
 .TP
+.B M
+Reverse marked images.
+.TP
 .B N
 Go
 .I count
-- 
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