CODEWITHSUNDEEP
perldebuggingemacs
Amelio Vazquez-Reina
Amelio Vazquez-Reina

Reputation: 96294

Perl debugger on Emacs: Clear screen (buffer)?

Say I have long debugging session in Perl with perldb on Emacs (M-x perldb). The output piles up, and at some point it becomes difficult to navigate through it.

I can restart the debugger with R, but that doesn't clear up the previous output. Is there a command to clear up the output of the buffer of the Perl debugger without having to kill the debugger and starting a new session?

Upvotes: 2

Views: 407

Answers (2)

user4815162342
user4815162342

Reputation: 154996

Debugger input and output is buffer contents like any other — if you want to delete it, just do it. For example, C-x h C-w (mark-whole-buffer followed by kill-region) works in perldb buffers just fine, and is the closest equivalent to a "clear screen" command in a text terminal.

Upvotes: 1

ataylor
ataylor

Reputation: 66069

You can run comint-truncate-buffer. This will remove all but the last 1024 lines from the buffer. The size can be customized by changing comint-buffer-maximum-size.

If you'd like to have the buffer truncated automatically, run this snippet of elisp:

(add-hook 'comint-output-filter-functions 'comint-truncate-buffer)

Upvotes: 3

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