You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

163 lines
4.7 KiB
Fish

6 years ago
##
# Use fzf as fish completion widget.
#
#
# When FZF_COMPLETE variable is set, fzf is used as completion
# widget for the fish shell by binding the TAB key.
#
# FZF_COMPLETE can have some special numeric values:
#
# `set FZF_COMPLETE 0` basic widget accepts with TAB key
# `set FZF_COMPLETE 1` extends 0 with candidate preview window
# `set FZF_COMPLETE 2` same as 1 but TAB walks on candidates
# `set FZF_COMPLETE 3` multi TAB selection, RETURN accepts selected ones.
#
# Any other value of FZF_COMPLETE is given directly as options to fzf.
#
# If you prefer to set more advanced options, take a look at the
# `__fzf_complete_opts` function and override that in your environment.
# modified from https://github.com/junegunn/fzf/wiki/Examples-(fish)#completion
function __fzf_complete -d 'fzf completion and print selection back to commandline'
# As of 2.6, fish's "complete" function does not understand
# subcommands. Instead, we use the same hack as __fish_complete_subcommand and
# extract the subcommand manually.
set -l cmd (commandline -co) (commandline -ct)
switch $cmd[1]
case env sudo
for i in (seq 2 (count $cmd))
switch $cmd[$i]
case '-*'
case '*=*'
case '*'
set cmd $cmd[$i..-1]
break
end
end
end
set -l cmd_lastw $cmd[-1]
set cmd (string join -- ' ' $cmd)
set -l initial_query ''
test -n "$cmd_lastw"; and set initial_query --query="$cmd_lastw"
set -l complist (complete -C$cmd)
set -l result
# do nothing if there is nothing to select from
test -z "$complist"; and return
set -l compwc (echo $complist | wc -w)
if test $compwc -eq 1
# if there is only one option dont open fzf
set result "$complist"
else
set -l query
string join -- \n $complist \
| sort \
| eval (__fzfcmd) $initial_query --print-query (__fzf_complete_opts) \
| cut -f1 \
| while read -l r
# first line is the user entered query
if test -z "$query"
set query $r
# rest of lines are selected candidates
else
set result $result $r
end
end
# exit if user canceled
if test -z "$query" ;and test -z "$result"
return
end
# if user accepted but no candidate matches, use the input as result
if test -z "$result"
set result $query
end
end
set prefix (string sub -s 1 -l 1 -- (commandline -t))
for i in (seq (count $result))
set -l r $result[$i]
switch $prefix
case "'"
commandline -t -- (string escape -- $r)
case '"'
if string match '*"*' -- $r >/dev/null
commandline -t -- (string escape -- $r)
else
commandline -t -- '"'$r'"'
end
case '~'
commandline -t -- (string sub -s 2 (string escape -n -- $r))
case '*'
commandline -t -- (string escape -n -- $r)
end
[ $i -lt (count $result) ]; and commandline -i ' '
end
commandline -f repaint
end
function __fzf_complete_opts_common
echo --cycle --reverse --inline-info
end
function __fzf_complete_opts_tab_accepts
echo --bind tab:accept,btab:cancel
end
function __fzf_complete_opts_tab_walks
echo --bind tab:down,btab:up
end
function __fzf_complete_opts_preview
set -l file (status -f)
echo --with-nth=1 --preview-window=right:wrap --preview="fish\ '$file'\ __fzf_complete_preview\ '{1}'\ '{2..}'"
end
test "$argv[1]" = "__fzf_complete_preview"; and __fzf_complete_preview $argv[2..3]
function __fzf_complete_opts_0 -d 'basic single selection with tab accept'
__fzf_complete_opts_common
echo --no-multi
__fzf_complete_opts_tab_accepts
end
function __fzf_complete_opts_1 -d 'single selection with preview and tab accept'
__fzf_complete_opts_0
__fzf_complete_opts_preview
end
function __fzf_complete_opts_2 -d 'single selection with preview and tab walks'
__fzf_complete_opts_1
__fzf_complete_opts_tab_walks
end
function __fzf_complete_opts_3 -d 'multi selection with preview'
__fzf_complete_opts_common
echo --multi
__fzf_complete_opts_preview
end
function __fzf_complete_opts -d 'fzf options for fish tab completion'
switch $FZF_COMPLETE
case 0
__fzf_complete_opts_0
case 1
__fzf_complete_opts_1
case 2
__fzf_complete_opts_2
case 3
__fzf_complete_opts_3
case '*'
echo $FZF_COMPLETE
end
end