+ applet::subwindow-need-recreate %T "%T i=%i k=%K N=%N R=%R S=%S k=%k m=%m d=%d s=%s a=%a b=%b c=%c f=%f w,h=%w,%h o=%o p=%p t=%t x,y=%x,%y B=%B D=%D E=%E P=%P W=%W X,Y=%X,%Y"
+ }
+}
+
+#----- subprocess -----
+
+variable subproc none
+variable ratelimit {}
+
+proc setup-subproc {get_cmdline} {
+ variable subproc_get_cmdline $get_cmdline
+ setup-subwindow applet::subproc-destroying applet::subproc-ready
+}
+
+proc subproc-destroying {} {
+ variable subproc
+ debug::debug "DESTROYING $subproc"
+
+ catch { destroy .i.i.b.c }
+
+ switch -exact $subproc {
+ none { }
+ old { }
+ default { kill $subproc; set subproc old }
+ }
+}
+
+proc subproc-ready {orientation} {
+ variable subproc
+ variable subproc_orientation $orientation
+ debug::debug "READY $subproc"
+
+ frame .i.i.b.c -container 1 -background orange
+ pack .i.i.b.c -fill both -side left -expand 1
+
+ switch -exact $subproc {
+ none {
+ run-child
+ }
+ old {
+ # wait for it to die
+ }
+ default {
+ error "unexpected state $subproc"
+ }
+ }
+ debug::debug "READY-done $subproc"
+}
+
+proc run-child {} {
+ variable subproc
+ variable ratelimit
+ variable subproc_get_cmdline
+ variable subproc_orientation
+
+ set id [winfo id .i.i.b.c]
+ set cmd [uplevel #0 $subproc_get_cmdline [list $id $subproc_orientation]]
+
+ debug::debug "RUN-CHILD $subproc"
+ set now [clock seconds]
+ lappend ratelimit $now
+ while {[lindex $ratelimit 0] < {$now - 10}} {
+ set ratelimit [lrange $ratelimit 1 end]
+ }
+ if {[llength $ratelimit] > 10} {
+ puts stderr "crashing repeatedly, quitting $ratelimit"
+ exit 127
+ }
+
+ set subproc none
+ set subproc [subproc::fork applet::child-died {
+ execl [lindex $cmd 0] [lrange $cmd 1 end]
+ }]
+ debug::debug "FORKED $subproc"
+}
+
+proc child-died {how how2} {
+ debug::debug "DIED $how $how2"
+ variable subproc
+ switch -exact $subproc {
+ old {
+ set subproc none
+ run-child
+ }
+ default {
+ set subproc none
+ subwindow-need-recreate child-died child-died
+ }