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My custom fish prompt code explained at http://geraldkaszuba.com/tweaking-fish-shell/
function _common_section
printf $c1
printf $argv[1]
printf $c0
printf ":"
printf $c2
printf $argv[2]
printf $argv[3]
printf $c0
printf ", "
end
function section
_common_section $argv[1] $c3 $argv[2] $ce
end
function error
_common_section $argv[1] $ce $argv[2] $ce
end
function fish_prompt
# $status gets nuked as soon as something else is run, e.g. set_color
# so it has to be saved asap.
set -l last_status $status
# c0 to c4 progress from dark to bright
# ce is the error colour
set -g c0 (set_color 005284)
set -g c1 (set_color 0075cd)
set -g c2 (set_color 009eff)
set -g c3 (set_color 6dc7ff)
set -g c4 (set_color ffffff)
set -g ce (set_color $fish_color_error)
# Clear the line because fish seems to emit the prompt twice. The initial
# display, then when you press enter.
printf "\033[K"
# Current time
printf (date "+$c2%H$c0:$c2%M$c0:$c2%S, ")
if [ $last_status -ne 0 ]
error last $last_status
set -ge status
end
# Track the last non-empty command. It's a bit of a hack to make sure
# execution time and last command is tracked correctly.
set -l cmd_line (commandline)
if test -n "$cmd_line"
set -g last_cmd_line $cmd_line
set -ge new_prompt
else
set -g new_prompt true
end
# Show last execution time and growl notify if it took long enough
set -l now (date +%s)
if test $last_exec_timestamp
set -l taken (math $now - $last_exec_timestamp)
if test $taken -gt 10 -a -n "$new_prompt"
error taken $taken
echo "Returned $last_status, took $taken seconds" | \
growlnotify -s $last_cmd_line
# Clear the last_cmd_line so pressing enter doesn't repeat
set -ge last_cmd_line
end
end
set -g last_exec_timestamp $now
# Show loadavg when too high
set -l load1m (uptime | grep -o '[0-9]\+\.[0-9]\+' | head -n1)
set -l load1m_test (math $load1m \* 100 / 1)
if test $load1m_test -gt 100
error load $load1m
end
# Show disk usage when low
set -l du (df / | tail -n1 | sed "s/ */ /g" | cut -d' ' -f 5 | cut -d'%' -f1)
if test $du -gt 80
error du $du%%
end
# Virtual Env
if set -q VIRTUAL_ENV
section env (basename "$VIRTUAL_ENV")
end
# Git branch and dirty files
git_branch
if set -q git_branch
set out $git_branch
if test $git_dirty_count -gt 0
set out "$out$c0:$ce$git_dirty_count"
end
section git $out
end
# Current Directory
# 1st sed for colourising forward slashes
# 2nd sed for colourising the deepest path (the 'm' is the last char in the
# ANSI colour code that needs to be stripped)
printf $c1
printf (pwd | sed "s,/,$c0/$c1,g" | sed "s,\(.*\)/[^m]*m,\1/$c3,")
# Prompt on a new line
printf $c4
printf "\n> "
end
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