[REBOL] Capturing trace output
From: SunandaDH::aol::com at: 17-Oct-2004 12:40
In an attempt to make trace even slightly useful, I doodled this code:
captured-print: copy  ;; all print gets saved here
system-print: get in system/words 'print ;; copy original print function
system-prin: get in system/words 'prin ;; copy original prin function
print: func [item] [ ;; redefine print
insert captured-print item
captured-print: copy/part captured-print 500
prin: :print ;; redefine prin
(I know there are subtle differences between the way 'system-print and 'print
work, but they are not relevant here).
So, in theory, I could run a script that has a trace in it, and then check
captured-print for the last 500 items. Rather than spending 10 times as long
watching bazillions of lines whizz past on the console.
Not so, though. Trace seems to output to the console without using 'print --
looks like one of those few immutable things about REBOL.