From 4d55748999d00853e0d2d678496f9329d97e7883 Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Sun, 30 Dec 2018 17:31:36 +0100
Subject: [PATCH] tweaks: reduce a bunch of repetitious comments to their
essence
And in the bargain add two missing equivalences.
---
src/winio.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/src/winio.c b/src/winio.c
index ea7bc56f..1cdb664a 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -1497,26 +1497,27 @@ long get_unicode_kbinput(WINDOW *win, int kbinput)
}
#endif /* ENABLE_UTF8 */
-/* Translate a control character sequence: turn an ASCII non-control
- * character into its corresponding control character. */
+/* Translate a normal ASCII character into its corresponding control code.
+ * The following groups of control keystrokes are equivalent:
+ * Ctrl-2 == Ctrl-@ == Ctrl-` == Ctrl-Space
+ * Ctrl-3 == Ctrl-[ == <Esc>
+ * Ctrl-4 == Ctrl-\ == Ctrl-|
+ * Ctrl-5 == Ctrl-]
+ * Ctrl-6 == Ctrl-^ == Ctrl-~
+ * Ctrl-7 == Ctrl-/ == Ctrl-_
+ * Ctrl-8 == Ctrl-? */
int get_control_kbinput(int kbinput)
{
- /* Ctrl-Space (Ctrl-2, Ctrl-@, Ctrl-`) */
if (kbinput == ' ' || kbinput == '2')
return 0;
- /* Ctrl-/ (Ctrl-7, Ctrl-_) */
else if (kbinput == '/')
return 31;
- /* Ctrl-3 (Ctrl-[, Esc) to Ctrl-7 (Ctrl-/, Ctrl-_) */
else if ('3' <= kbinput && kbinput <= '7')
return kbinput - 24;
- /* Ctrl-8 (Ctrl-?) */
else if (kbinput == '8' || kbinput == '?')
return DEL_CODE;
- /* Ctrl-@ (Ctrl-Space, Ctrl-2, Ctrl-`) to Ctrl-_ (Ctrl-/, Ctrl-7) */
else if ('@' <= kbinput && kbinput <= '_')
return kbinput - '@';
- /* Ctrl-` (Ctrl-2, Ctrl-Space, Ctrl-@) to Ctrl-~ (Ctrl-6, Ctrl-^) */
else if ('`' <= kbinput && kbinput <= '~')
return kbinput - '`';
else
--
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