Support custom fish prompt

Today I wrote myself a custom fish prompt. It's mostly what I'd like, but I'd
like to finely tune it a bit. I'd like to create a separate repository to
release this. In that repository, I'll explain why I wrote this.
This commit is contained in:
William Carroll 2020-03-04 18:49:31 +00:00
parent 549e56186b
commit 11d8336733

View file

@ -50,23 +50,74 @@ set fish_greeting ""
# Prompt
function fish_prompt
set -l color_cwd
set -l suffix
switch "$USER"
case root toor
if set -q fish_color_cwd_root
set color_cwd $fish_color_cwd_root
else
set color_cwd $fish_color_cwd
end
set suffix '#'
case '*'
set color_cwd $fish_color_cwd
set suffix '>'
# My custom prompt.
#
# Design objectives:
# - max-length <= 80 characters
# - minimal
# - no dependencies (well, you know what I mean)
#
# Components
# - ssh connection
# - user
# - host
# - git repo
# - git branch
# - lambda character as prompt
# Cache status before we overwrite it.
set -l last_status $status
# Colors
set -l color_inactive (set_color red --bold)
set -l color_active (set_color green --bold)
set -l color_normal (set_color normal)
# SSH information
if set -q SSH_CLIENT; or set -q SSH_TTY
echo -en "$color_active \bssh ✓ [$color_normal$USER@"(hostname)"$color_active]$color_normal"
else
echo -en "$color_inactive \bssh ✗ [$color_normal$USER@"(hostname)"$color_inactive]$color_normal"
end
echo -n -s "$USER" @ (prompt_hostname) ' ' (set_color $color_cwd) (pwd) (set_color normal)
echo -e "\n$suffix "
# Separator
echo -n " "
# Git information
set -l git_repo (git rev-parse --show-toplevel 2>/dev/null)
set -l git_status $status
set -l dir_parent (basename (realpath ..))
set -l dir_current (basename (realpath .))
if test $git_status -eq 0
set -l git_repo_name (basename (git rev-parse --show-toplevel))
set -l git_branch (git branch 2>/dev/null | grep '^\*' | cut -d' ' -f2-)
echo -en "$color_active \bgit ✓ [$color_normal$git_branch$color_active|$color_normal$git_repo_name$color_active|$color_normal$dir_parent/$dir_current$color_active]$color_normal"
else
echo -en "$color_inactive \bgit ✗ [$color_normal$dir_parent/$dir_current$color_inactive]$color_normal"
end
# Newline
echo
# Handle root vs non-root
if [ "$USER" = "root" ]
set -g prompt_sigil "#"
else
set -g prompt_sigil "λ"
end
# TODO(wpcarro): For root directories like /tmp, there will not be a parent
# directory. Support these directories.
set -l time (date +"%T")
if test $last_status -eq 0
# TODO(wpcarro): I'd prefer to use black here instead of white, but for
# some reason white is black and black is invisible.
set -l color_prompt (set_color white --bold)
echo -n "$time$color_prompt $prompt_sigil$color_normal "
else
set -l color_prompt (set_color red --bold)
echo -n "$time$color_prompt $prompt_sigil$color_normal "
end
end
source ./functions.fish