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Properly clear the last entered character

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When enter is pressed, passwd[len] will be set to '\0'. Pressing
backspace is supposed to remove the last entered character.

But currently, the clearing has an off-by-one, as in setting
passwd[len] to '\0' just like enter would do.

You can also verify it by imagining len=1 and that it's impossible to
clear passwd[0] by pressing backspace with the current code.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
This commit is contained in:
Tobias Stoeckmann 2017-03-25 21:16:01 +01:00 committed by Markus Teich
parent 2d2a21a90a
commit 35633d4567
1 changed files with 1 additions and 1 deletions
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slock.c
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@ -177,7 +177,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
break; break;
case XK_BackSpace: case XK_BackSpace:
if (len) if (len)
passwd[len--] = '\0'; passwd[--len] = '\0';
break; break;
default: default:
if (num && !iscntrl((int)buf[0]) && if (num && !iscntrl((int)buf[0]) &&