From b37f9e461798ba77e19ab20d7ca18555d1171e19 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Sun, 19 Oct 2014 12:24:38 +0200
Subject: Toggle case operator

In vim, :set tildeop to get this behaviour
---
 vis.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'vis.c')

diff --git a/vis.c b/vis.c
index c8531e4..f82ab89 100644
--- a/vis.c
+++ b/vis.c
@@ -616,7 +616,11 @@ static void op_case_change(OperatorContext *c) {
 	size_t rem = len;
 	for (char *cur = buf; rem > 0; cur++, rem--) {
 		if (isascii((unsigned char)*cur)) {
-			if (c->arg->i > 0)
+			if (c->arg->i == 0) {
+				*cur = islower((unsigned char)*cur) ?
+				       toupper((unsigned char)*cur) :
+				       tolower((unsigned char)*cur) ;
+			} else if (c->arg->i > 0)
 				*cur = toupper((unsigned char)*cur);
 			else
 				*cur = tolower((unsigned char)*cur);
-- 
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