Incremental output
This patch causes dmenu to print out the current text each time a key is pressed.
This is useful as an incremental search feature, for example in surf's config.h:
#define INCSEARCH { .v = (char *[]) { "/bin/sh", "-c", "dmenu -r < /dev/null | while read -r find; do xprop -id $0 -f _SURF_FIND 8s " "-set _SURF_FIND \"$find\"; done", winid, NULL } }