The workaround to make [[ and ]] modify the tab width doesn't work if the PHP plugin is not loaded. There should be a test in .vimrc for this

Inserts highlighting (color or bold/invert according to availability) in stdin text and serves it to stdout. The point is to be able to distinguish more than one type of text (unlike grep --color=always). Give it at least one regex/literal, and it'll highlight each regex differently (using a predefined set of highlight codes). For example, given:

foo.sh:
# Explanation for FOO
# Explanation for BAR
do something with FOO

the literal output of highlight --regex '^\s*#.*$' --literal FOO < foo.sh could look like this (try this with echo -e 'string' to see the result):

\e[0;31m# Explanation for \e[0;32mFOO\e[0;30m\e[0;30m
\e[0;31m# Explanation for BAR\e[0;30m
do something with \e[0;32mFOO\e[0;30m

Asked for this on Stack Overflow.

Tips

for argument is enough: Bash Pitfalls

Don't tell anyone, but https://github.com/jessfraz/dotfiles has lots of stuff worth stealing. Found so far:

• i3 configuration
• Shellcheck using Docker container
• Travis CI configuration (might get away without sudo:required)
• ~/.xsessionrc (maybe)
• Mutt!

ESC#5 sequences are not handled properly, so they show up as �#5 at the start of each line. Reference.

Rather than maintaining a custom tool for this it would probably be better to use the existing msort (if possible).