If I use grep --color=always and it matches on a line that is already coloured, it results in the text after the match is reset to the terminal's default colour/attributes. E.g.
This just shows a line with some colour/attributes set: $ echo The quick brown fox jumps over the lazy dog | > GREP_COLOR='03;36' grep --color=always '.*' ESC[03;36mESC[KThe quick brown fox jumps over the lazy dogESC[mESC[K This shows the same line with fox highlighted in other attributes: $ echo The quick brown fox jumps over the lazy dog | > GREP_COLOR='03;36' grep --color=always '.*' | > GREP_COLOR='01;36' grep --color=always 'fox' ESC[03;36mESC[KThe quick brown ESC[01;36mESC[KfoxESC[mESC[K jumps over the lazy dogESC[mESC[K The issue is that the current colour isn't tracked, it is just reset with ESC[m. It would be nice if it were able to be tracked. Yes, it is more difficult to code, but I think it would be useful when highlighting a coloured textual document.
