GNU bug report logs - #30430
[column] accounting for ansi color codes

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Boruch Baum <boruch_baum <at> gmx.com>
To: bug-coreutils <at> gnu.org,
	P�draig Brady <P <at> draigBrady.com>
Subject: [column] accounting for ansi color codes
Date: Mon, 12 Feb 2018 01:07:15 -0500

The `column -t' command doesn't align input properly when that input
includes ansi color codes.

An argument that it should do so, is that `column' serves to make input
more readable, and easier to find and compare fields of input data - the
same goal as colorization.

I encountered this when trying to columnate log output that had been fed
through the colorization program `ccze'.

Example: Compare the output of the following two one-liners:

 awk '{sub("install|configure|upgrade|trigproc","& _",$3);print}' \
 /var/log/dpkg.log | column -t

 awk '{sub("install|configure|upgrade|trigproc","& _",$3);print}' \
 /var/log/dpkg.log | ccze -m ansi -o noscroll >&1 | column -t

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