tUnhighlight selection when selection is owner by other window - st - [fork] customized build of st, the simple terminal
  HTML git clone git://src.adamsgaard.dk/st
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       ---
   DIR commit f471a32d29ad9e5e06cf5e5d5efc8422483f535e
   DIR parent 017af76f5c89fa1acf9b54ceaad2101dcfd880a0
  HTML Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
       Date:   Wed,  5 Sep 2012 21:55:45 +0200
       
       Unhighlight selection when selection is owner by other window
       
       st marks the active selection using reverse colors in the box selection, but
       once that another window becomes owner of the selection, it is very
       confusing that st keeps highlight the old selection. Usually terminal
       emulators remove the highlight when it is not valid anymore.
       
       X sends a SelectionClear event in this situation, so we only have to add a
       callback which unhighlight the selectin box.
       ---
        st.c |    9 +++++++++
        1 file changed, 9 insertions(+)
       Diffstat:
         M st.c                                |       9 +++++++++
       
       1 file changed, 9 insertions(+), 0 deletions(-)
       ---
   DIR diff --git a/st.c b/st.c
       t@@ -311,6 +311,7 @@ static void brelease(XEvent *);
        static void bpress(XEvent *);
        static void bmotion(XEvent *);
        static void selnotify(XEvent *);
       +static void selclear(XEvent *);
        static void selrequest(XEvent *);
        
        static void selinit(void);
       t@@ -336,6 +337,7 @@ static void (*handler[LASTEvent])(XEvent *) = {
                [MotionNotify] = bmotion,
                [ButtonPress] = bpress,
                [ButtonRelease] = brelease,
       +        [SelectionClear] = selclear,
                [SelectionNotify] = selnotify,
                [SelectionRequest] = selrequest,
        };
       t@@ -612,6 +614,13 @@ selpaste() {
                XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
        }
        
       +void selclear(XEvent *e) {
       +        if(sel.bx == -1)
       +                return;
       +        sel.bx = -1;
       +        tsetdirt(sel.b.y, sel.e.y);
       +}
       +
        void
        selrequest(XEvent *e) {
                XSelectionRequestEvent *xsre;