I rebased Andrew Hills "capscolor" patch for slock onto the current HEAD at 9dfe0ce, this patch adds it to the wiki.
commit ba95deb099021e893ed8b5f27d20dff4e5737454 Author: Klemens Nanni <k...@posteo.org> Date: Sat Jan 30 22:39:25 2016 +0100
[slock] 20160130-capscolor.diff
diff --git a/tools.suckless.org/slock/patches/capscolor.md b/tools.suckless.org/slock/patches/capscolor.md
index cd0fe80..189b174 100644
--- a/tools.suckless.org/slock/patches/capscolor.md
+++ b/tools.suckless.org/slock/patches/capscolor.md
@@ -8,12 +8,16 @@ Introduces an additional color to indicate the state of Caps Lock. Not
compatible with the [failcolor](./failcolor) patch. Written against HEAD at
a31b919, but should apply to 1.2.
+Version 20160130 is written against current HEAD at 9dfe0ce.
+
Download
--------
* [slock-capscolor.diff](slock-capscolor.diff)
+* [slock-20160130-capscolor.diff](slock-20160130-capscolor.diff)
-Author
-------
+Authors
+-------
* Andrew Hills <[ahi...@ednos.net](mailto:ahi...@ednos.net)>
+* Klemens Nanni <[k...@posteo.org](mailto:ahi...@ednos.net)> (20160130 version)
diff --git a/tools.suckless.org/slock/patches/slock-20160130-capscolor.diff b/tools.suckless.org/slock/patches/slock-20160130-capscolor.diff
new file mode 100644
index 0000000..06320b3
--- /dev/null
+++ b/tools.suckless.org/slock/patches/slock-20160130-capscolor.diff
@@ -0,0 +1,72 @@
+diff --git a/config.def.h b/config.def.h
+index fca0ae0..6673e54 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -2,5 +2,6 @@ static const char *colorname[NUMCOLS] = {
+ "black", /* after initialization */
+ "#005577", /* during input */
+ "#CC3333", /* failed/cleared the input */
++ "red", /* CapsLock on */
+ };
+ static const Bool failonclear = True;
+diff --git a/slock.c b/slock.c
+index df2d3c6..8c1a791 100644
+--- a/slock.c
++++ b/slock.c
+@@ -17,6 +17,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xlib.h>
+ #include <X11/Xutil.h>
++#include <X11/XKBlib.h>
+
+ #if HAVE_BSD_AUTH
+ #include <login_cap.h>
+@@ -27,6 +28,7 @@ enum {
+ INIT,
+ INPUT,
+ FAILED,
++ CAPS,
+ NUMCOLS
+ };
+
+@@ -127,15 +129,19 @@ readpw(Display *dpy, const char *pws)
+ #endif
+ {
+ char buf[32], passwd[256];
+- int num, screen;
+- unsigned int len, color;
++ int num, screen, caps;
++ unsigned int len, color, indicators;
+ KeySym ksym;
+ XEvent ev;
+ static int oldc = INIT;
+
+ len = 0;
++ caps = 0;
+ running = True;
+
++ if (!XkbGetIndicatorState(dpy, XkbUseCoreKbd, &indicators))
++ caps = indicators & 1;
++
+ /* As "slock" stands for "Simple X display locker", the DPMS settings
+ * had been removed and you can set it with "xset" or some other
+ * utility. This way the user can easily set a customized DPMS
+@@ -177,6 +183,9 @@ readpw(Display *dpy, const char *pws)
+ if (len)
+ --len;
+ break;
++ case XK_Caps_Lock:
++ caps = !caps;
++ break;
+ default:
+ if (num && !iscntrl((int)buf[0]) && (len + num < sizeof(passwd))) {
+ memcpy(passwd + len, buf, num);
+@@ -184,7 +193,7 @@ readpw(Display *dpy, const char *pws)
+ }
+ break;
+ }
+- color = len ? INPUT : (failure || failonclear ? FAILED : INIT);
++ color = len ? (caps ? CAPS : INPUT) : (failure || failonclear ? FAILED : INIT);
+ if (running && oldc != color) {
+ for (screen = 0; screen < nscreens; screen++) {
+ XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
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