From ee965f2133c9b34d1c2519467da6b1df3320a23a Mon Sep 17 00:00:00 2001
From: "Rob Swindell (on Debian Linux)" <rob@synchro.net>
Date: Fri, 31 Jan 2025 12:14:19 -0800
Subject: [PATCH] Add K_CHANGED mode flag for uifc.input()
Used in combination with K_EDIT, if the string isn't actually changed, return
-1 (same as abort/ESC).
This allows the elimination of some save/compare/copy code in SCFG where we
only care to even look at the string if it was changed from its existing
value.
---
src/uifc/uifc.h | 1 +
src/uifc/uifc32.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/src/uifc/uifc.h b/src/uifc/uifc.h
index 7de1b6b8de..2b04533725 100644
--- a/src/uifc/uifc.h
+++ b/src/uifc/uifc.h
@@ -201,6 +201,7 @@ typedef int64_t uifc_winmode_t;
#define K_FIND (1 << 17) /* Don't set the "changes" flag */
#define K_TRIM (1 << 23) /* Don't allow leading or trailing wsp */
#define K_NOSPACE (1 << 26) /* Don't allow any wsp chars */
+#define K_CHANGED (1 << 28) /* Return -1 if string was not changed (w/K_EDIT) */
/* Extra exit flags */
diff --git a/src/uifc/uifc32.c b/src/uifc/uifc32.c
index 2d2709c9e7..9c6bdfac7a 100644
--- a/src/uifc/uifc32.c
+++ b/src/uifc/uifc32.c
@@ -2541,6 +2541,8 @@ int ugetstr(int left, int top, int width, char *outstr, int max, long mode, int
{
if (!(mode & K_FIND) && strcmp(outstr, str))
api->changes = 1;
+ else if (mode & K_CHANGED)
+ j = -1;
}
else
{
--
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