From 77d9b1a3211d23ce3f57928006eaab6e719f64af Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Mon, 31 Mar 2025 10:29:20 +0800
Subject: Add colb from June McEnroe

---
 utils/colb.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 utils/colb.c

(limited to 'utils/colb.c')

diff --git a/utils/colb.c b/utils/colb.c
new file mode 100644
index 0000000..e50ac5d
--- /dev/null
+++ b/utils/colb.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: Copyright (c) 2021 June McEnroe <june@causal.agency>
+
+#include <locale.h>
+#include <stdio.h>
+#include <wchar.h>
+
+int main(void)
+{
+	setlocale(LC_CTYPE, "C.UTF-8");
+	wint_t next, prev = WEOF;
+	while (WEOF != (next = getwchar())) {
+		if (next == L'\b') {
+			prev = WEOF;
+		} else {
+			if (prev != WEOF) putwchar(prev);
+			prev = next;
+		}
+	}
+	if (prev != WEOF)
+		putwchar(prev);
+}
-- 
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