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Add completions for git show $rev:$path

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This command can be used to "`cat`" the contents of `$path` as of `$rev`.

These are "silent" completions, e.g. while this adds a completion for
`git show master:foo`, the completions for `git show <TAB>` are not
affected; these "advanced" completions kick in only after at least
`git show master:<TAB>` to prevent completion pollution or slowing down
tab completions in the typical case (as this would cause each valid and
possibly unique $rev completion result to complete to `n*$rev`
completions for *n* files.

[ci skip]
This commit is contained in:
Mahmoud Al-Qudsi 2019-04-23 21:49:51 -05:00
parent 4bdab33a00
commit ae11bf4dcb
1 changed files with 34 additions and 0 deletions
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34
share/completions/git.fish
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@ -400,6 +400,39 @@ function __fish_git_files
end
end
# Lists files included in the index of a commit, branch, or tag (not necessarily HEAD)
function __fish_git_rev_files
set -l rev $argv[1]
set -l path $argv[2]
# Strip any partial files from the path before handing it to `git show`
set -l path (string replace -r -- '(.*/|).*' '$1' $path)
# List files in $rev's index, skipping the "tree ..." header, but appending
# the parent path, which git does not include in the output (and fish requires)
printf "$path%s\n" (git show $rev:$path | sed '1,2d')
end
# Provides __fish_git_rev_files completions for the current token
function __fish_git_complete_rev_files
set -l split (string split -m 1 ":" (commandline -ot))
set -l rev $split[1]
set -l path $split[2]
printf "$rev:%s\n" (__fish_git_rev_files $rev $path)
end
# Determines whether we can/should complete with __fish_git_rev_files
function __fish_git_needs_rev_files
# git (as of 2.20) accepts the rev:path syntax for a number of subcommands,
# but then doesn't emit the expected (or any?) output, e.g. `git log master:foo`
#
# This definitely works with `git show` to retrieve a copy of a file as it exists
# in the index of revision $rev, it should be updated to include others as they
# are identified.
__fish_git_using_command show; and string match -r ".+:" -- (commandline -ot)
end
function __fish_git_ranges
set -l both (commandline -ot | string split "..")
set -l from $both[1]
@ -797,6 +830,7 @@ complete -f -c git -n '__fish_git_needs_command' -a show -d 'Shows the last comm
complete -f -c git -n '__fish_git_using_command show' -a '(__fish_git_branches)'
complete -f -c git -n '__fish_git_using_command show' -ka '(__fish_git_tags)' -d 'Tag'
complete -f -c git -n '__fish_git_using_command show' -ka '(__fish_git_commits)'
complete -f -c git -n '__fish_git_needs_rev_files' -xa '(__fish_git_complete_rev_files)'
complete -f -c git -n '__fish_git_using_command show' -l format -d 'Pretty-print the contents of the commit logs in a given format' -a '(__fish_git_show_opt format)'
complete -f -c git -n '__fish_git_using_command show' -l abbrev-commit -d 'Show only a partial hexadecimal commit object name'
complete -f -c git -n '__fish_git_using_command show' -l no-abbrev-commit -d 'Show the full 40-byte hexadecimal commit object name'