Use slow path if stdin is a tty
If stdin is a tty and dmenu is ran with the fast option then it's impossible to close stdin because the keyboard is already grabbed.
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dmenu.c
4
dmenu.c
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@ -6,9 +6,7 @@
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#include <string.h>
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#include <strings.h>
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#include <time.h>
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#ifdef __OpenBSD__
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#include <unistd.h>
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#endif
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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@ -754,7 +752,7 @@ main(int argc, char *argv[])
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die("pledge");
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#endif
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if (fast) {
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if (fast && !isatty(0)) {
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grabkeyboard();
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readstdin();
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} else {
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