fish-shell/share/functions/fish_prompt.fish
Johannes Altmanninger 55bc6a27c6 Make prompts forward compatible with fish 3.1.2 by passing locally exported variable
Commit 5d135d555 (prompts: fix pipestatus for jobs prefixed with "not")
introduced a backwards compatibility hack about adding an optional argument
to __fish_print_pipestatus. This hack would break downgrading to fish 3.1.2
if the user copied the new prompt to their config - they would get a backtrace
on every prompt which is arguably worse than the patch's minor improvement.

This does away with the error trace - old fish just won't show the fancy
new pipestatus on `not true`.

Implemented by passing the last $status as the poor man's kwarg, which works
since 3.1.0 (9b86d5dd1 Export all local exported variables in a new scope).

The prompts don't work with fish 3.0.0 or older; downgrading does not seem
too important in general but I think this patch is an okay simplification.
2020-09-05 09:58:55 +02:00

36 lines
1.5 KiB
Fish

# name: Classic + Vcs (the default)
# author: Lily Ballard
function fish_prompt --description 'Write out the prompt'
set -l last_pipestatus $pipestatus
set -lx __fish_last_status $status # Export for __fish_print_pipestatus.
set -l normal (set_color normal)
# Color the prompt differently when we're root
set -l color_cwd $fish_color_cwd
set -l suffix '>'
if functions -q fish_is_root_user; and fish_is_root_user
if set -q fish_color_cwd_root
set color_cwd $fish_color_cwd_root
end
set suffix '#'
end
# If we're running via SSH, change the host color.
set -l color_host $fish_color_host
if set -q SSH_TTY
set color_host $fish_color_host_remote
end
# Write pipestatus
# If the status was carried over (e.g. after `set`), don't bold it.
set -l bold_flag --bold
set -q __fish_prompt_status_generation; or set -g __fish_prompt_status_generation $status_generation
if test $__fish_prompt_status_generation = $status_generation
set bold_flag
end
set __fish_prompt_status_generation $status_generation
set -l prompt_status (__fish_print_pipestatus "[" "]" "|" (set_color $fish_color_status) (set_color $bold_flag $fish_color_status) $last_pipestatus)
echo -n -s (set_color $fish_color_user) "$USER" $normal @ (set_color $color_host) (prompt_hostname) $normal ' ' (set_color $color_cwd) (prompt_pwd) $normal (fish_vcs_prompt) $normal " "$prompt_status $suffix " "
end