fish-shell/share/functions/__fish_preview_current_file.fish
Fabian Boehm ed489d0d52 Add __fish_anypager helper
This makes it easier to get *any pager* in the number of places we do.

Unfortunately:

1. It can't just execute the pager because that might block
2. We can't really set the necessary options for less here
   so they still need to be set outside.

This

Fixes #10074

by falling back to `cat` in that case. We could also decide to abort
instead of using a non-pager, but for history that's probably fine.
2023-11-20 17:16:35 +01:00

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Fish

function __fish_preview_current_file --description "Open the file at the cursor in a pager"
set -l pager (__fish_anypager)
or set pager cat
# commandline -t will never return an empty list. However, the token
# could comprise multiple lines, so join them into a single string.
set -l file (commandline -t | string collect)
if test -z $file
# $backslash will parsed as regex which may need additional escaping.
set -l backslash '\\\\'
not status test-feature regex-easyesc && set backslash $backslash$backslash
set file (string replace -ra -- '([ ;#^<>&|()"\'])' "$backslash\$1" (commandline -oc)[-1])
end
set -q file[1] || return
# strip -option= from token if present
set file (string replace -r -- '^-[^\s=]*=' '' $file | string collect)
eval set -l files $file || return # Bail if $file does not tokenize.
if set -q files[1] && test -f $files[1]
$pager $files
commandline -f repaint
end
end