'tcsh' Git prompt to show current branch

gistfile1.tcsh

# in ~/bin/gitprompt.csh:

setenv GIT_BRANCH_CMD "sh -c 'git branch --no-color 2> /dev/null' | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1) /'"
set prompt="%m:%~ `$GIT_BRANCH_CMD`%B%#%b "

# and then in ~/.cshrc:

alias precmd "source ~/bin/gitprompt.csh"

Its much cleaner if you use git branch --show-current, no need for the parsing, this will also work with multiple git worktrees.

Be aware that git branch --show-current only works for git version 2.22 or later. This may be useful to know in some slow-moving corporate environments.