I have quite a lot of Perl scripts which print colored output to the terminal, using Term::ANSIColor. This is the same as when a shell script does e.g.
echo -e '\e[1;31mError:\e[0m Your fault.'
Viewing log files of these commands works in less (with the -R switch), but in Vim, the color characters are displayed raw like this:
^[[1;31mError:^[[0m Your fault.
I would do a syntax file to match these markers, conceal them, and color the resulting syntax regions accordingly, but first I wanted to check whether there is something like this already.
Best Answer
Have a look into this plugin, it's likely what you want:
AnsiEsc.vim : ansi escape sequences concealed, but highlighted as specified