例证:
我是一个使用bash v3.2.17的mac,我正在使用通过macports安装的git和bash_completion变体.
当我输入git checkout m.例如,我把它完成了master.
但是,我有一个别名git checkout,gco.当我输入时gco m,我没有自动完成分支名称.
理想情况下,我希望自动完成只是神奇地为我的所有别名工作.可能吗？如果做不到这一点,我想为每个别名手动定制它.那么,我该怎么做呢？
如上面的评论所述,
complete -o default -o nospace -F _git_checkout gco
将不再有效.但是,__git_completegit-completion.bash中有一个函数可用于设置别名的完成,如下所示:
__git_complete gco _git_checkout
我也遇到了这个问题,并提出了这段代码.这将自动为您完成所有别名.在声明所有(或任何)别名后运行它.
# wrap_alias takes three arguments:
# $1: The name of the alias
# $2: The command used in the alias
# $3: The arguments in the alias all in one string
# Generate a wrapper completion function (completer) for an alias
# based on the command and the given arguments, if there is a
# completer for the command, and set the wrapper as the completer for
# the alias.
function wrap_alias() {
[[ "$#" == 3 ]] || return 1
local alias_name="$1"
local aliased_command="$2"
local alias_arguments="$3"
local num_alias_arguments=$(echo "$alias_arguments" | wc -w)
# The completion currently being used for the aliased command.
local completion=$(complete -p $aliased_command 2> /dev/null)
# Only a completer based on a function can be wrapped so look for -F
# in the current completion. This check will also catch commands
# with no completer for which $completion will be empty.
echo $completion | grep -q -- -F || return 0
local namespace=alias_completion::
# Extract the name of the completion function from a string that
# looks like: something -F function_name something
# First strip the beginning of the string up to the function name by
# removing "* -F " from the front.
local completion_function=${completion##* -F }
# Then strip " *" from the end, leaving only the function name.
completion_function=${completion_function%% *}
# Try to prevent an infinite loop by not wrapping a function
# generated by this function. This can happen when the user runs
# this twice for an alias like ls='ls --color=auto' or alias l='ls'
# and alias ls='l foo'
[[ "${completion_function#$namespace}" != $completion_function ]] && return 0
local wrapper_name="${namespace}${alias_name}"
eval "
function ${wrapper_name}() {
let COMP_CWORD+=$num_alias_arguments
args=( \"${alias_arguments}\" )
COMP_WORDS=( $aliased_command \${args[@]} \${COMP_WORDS[@]:1} )
$completion_function
}
"
# To create the new completion we use the old one with two
# replacements:
# 1) Replace the function with the wrapper.
local new_completion=${completion/-F * /-F $wrapper_name }
# 2) Replace the command being completed with the alias.
new_completion="${new_completion% *} $alias_name"
eval "$new_completion"
}
# For each defined alias, extract the necessary elements and use them
# to call wrap_alias.
eval "$(alias -p | sed -e 's/alias \([^=][^=]*\)='\''\([^ ][^ ]*\) *\(.*\)'\''/wrap_alias \1 \2 '\''\3'\'' /')"
unset wrap_alias
在git-completion.bash有一行:
complete -o default -o nospace -F _git git
查看该行(和_git函数),您可以将此行添加到.bash_profile:
complete -o default -o nospace -F _git_checkout gco
我有别名g ='git',并结合我的git别名我输入类似的东西
$ g co
对我的特定用例更简单的修复是向git-completion添加一行.
在这一行的正下方:
__git_complete git _git
我添加了这一行来处理我的单个'g'别名:
__git_complete g _git
理想情况下,我希望自动完成只是神奇地为我的所有别名工作.可能吗？
是的,可以使用complete-alias项目(在Linux上).对Mac的支持是实验性的,但用户已报告成功.
此论坛页面显示了一个解决方案
将这些行放入您的.bashrc或.bash_profile:
# Author.: Ole J # Date...: 23.03.2008 # License: Whatever # Wraps a completion function # make-completion-wrapper# # eg. # alias agi='apt-get install' # make-completion-wrapper _apt_get _apt_get_install apt-get install # defines a function called _apt_get_install (that's $2) that will complete # the 'agi' alias. (complete -F _apt_get_install agi) # function make-completion-wrapper () { local function_name="$2" local arg_count=$(($#-3)) local comp_function_name="$1" shift 2 local function=" function $function_name { ((COMP_CWORD+=$arg_count)) COMP_WORDS=( "$@" \${COMP_WORDS[@]:1} ) "$comp_function_name" return 0 }" eval "$function" } # and now the commands that are specific to this SO question alias gco='git checkout' # we create a _git_checkout_mine function that will do the completion for "gco" # using the completion function "_git" make-completion-wrapper _git _git_checkout_mine git checkout # we tell bash to actually use _git_checkout_mine to complete "gco" complete -o bashdefault -o default -o nospace -F _git_checkout_mine gco
这个解决方案类似于balshetzer的脚本,但只有这个实际上适合我.(balshetzer的剧本在我的一些别名上有问题.)
另一种选择是使用~/.bash_completion文件。要创建gco别名，git checkout只需将其放在其中：
_xfunc git __git_complete gco _git_checkout
然后，~/.bashrc您只需要输入别名本身：
alias gco='git checkout'
两行。而已。
说明：
这些~/bash_completion获取来自主bash_completion脚本末尾。在gentoo中，我在中找到了主要脚本/usr/share/bash-completion/bash_completion。
该_xfunc git位负责git-completion为您寻找文件，因此您无需放入任何其他内容~/.bashrc。
接受的答案要求您.git-completion.sh从~/.bashrc我认为很and脚的文件中复制并获取它。
PS：我仍在尝试弄清楚如何不将整个git-completion脚本提供给我的bash环境。如果找到方法，请发表评论或编辑。
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