Re^5: Debugging a program

With Strawberry Perl 5.26.2 (Windows 7) I got some complaints about unknown terminal window size when starting the debugger.

Unable to get Terminal Size. The Win32 GetConsoleScreenBufferInfo call
+ didn't work. The COLUMNS and LINES environment variables didn't work
+. at C:/Strawberry/perl/vendor/lib/Term/ReadLine/readline.pm line 410
+.
[download]

These lines in sub afterinit take care of it:

    my ($cols, $lines) = split ' ', (grep { m{^\s*\d+\s+\d+\s}xms } `p
+owershell -command "&{\$H=get-host;\$H.ui.rawui.WindowSize;}"`)[0];
    $ENV{'COLUMNS'} = $cols;
    $ENV{'LINES'} = $lines;
    print "COLUMNS and LINES are set ($cols,$lines).\n";
[download]

Powershell is used here to get the console property WindowSize. Then the environment variables COLUMNS and LINES are locally set and the readline.pm module is happy.

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Re^6: Debugging a program by jdporter (Paladin) on Feb 20, 2019 at 17:24 UTC
Sweet! I'd prob do it this way: `my( $cols, $lines ) = qx( powershell -command "&{ \$H=get-host; \$H.ui +.rawui.WindowSize.Width; \$H.ui.rawui.WindowSize.Height; }" ) =~ /(\d ++)/g;` [download] I reckon we are the only monastery ever to have a dungeon stuffed with 16,000 zombies.	[reply] [d/l]
Re^6: Debugging a program with Tk by hexcoder (Curate) on Sep 19, 2019 at 09:08 UTC
When using Tk, I observed that my custom debugging signal handler for `$SIG{__WARN__}` is overwritten by Tk :(. So I needed to reoverwrite it after `use Tk;` with my own one again. `use Tk; ... # if running with debugger, reinstall signal handler if (defined $DB::single) { # avoid warning: '$DB::single' is only used once $DB::single = $DB::single; DB::afterinit(); }` [download] Unfortunately this requires modification of the script. Any suggestions for enhancements are welcome.	[reply] [d/l] [select]