如何在.bashrc中制作vim调用函数? [英] How to make the vim call function in .bashrc?

问题描述

环境:debian9 + vim7.4.

Environment: debian9+vim7.4.

   cat .bashrc
   add(){
        echo $(expr $1 + $2)
    }

现在在vim中编辑文件

Now edit a file in vim

add 1 5 

在命令模式:w !bash中运行它，发生错误.

Run it in command mode :w !bash,an error occur.

bash: line 1: add: command not found    
shell returned 127

在/etc/vim/vimrc和.bashrc和.vimrc中的

1.add set shellcmdflag=-ic.
2.重新启动
3.vim test.sh
进入命令模式
:verbose设置shellcmdflag

1.add set shellcmdflag=-ic in both /etc/vim/vimrc and .bashrc and .vimrc .
2.reboot
3.vim test.sh
enter into command mode
:verbose set shellcmdflag

  shellcmdflag=-ic
        Last set from ~/.vimrc

4.在test.sh中输入两行

4.input two lines in test.sh

ls
add  5  6

:w !bash     
a1.sh       test.py    
bash: line 2: add: command not found    
shell returned 127    

如何使两行同时执行?

How to make both two lines executed?

:execute '! source ~/.bashrc; source '.expand('%:p')可以同时运行以下两个命令:ls和add.

:execute '! source ~/.bashrc; source '.expand('%:p') can make both commands: ls and add run.

重新启动后，
1.无法从sh test.sh调用添加功能吗?

After rebooting,
1.add function can't be called from sh test.sh?

sh test.sh
test.sh   #it means that ls command executed
test.sh: 2: test.sh: add: not found  #it means that add function can't be called from  /etc/vim/vimrc or .bashrc  or .vimrc.

2.add函数不能从vim !bash %调用吗?

2.add function can't be called from vim !bash %?

test.sh    #it means that ls command executed
test.sh: line 2: add: command not found  #it means that add function can't be called from  /etc/vim/vimrc or .bashrc  or .vimrc.

[4]+  Stopped                 vim test.sh

推荐答案

问题是Vim默认会调用 non-interactive shell和.bashrc(在其中定义了add函数)仅用于交互式外壳程序.

The problem is that Vim by default invokes a non-interactive shell, and .bashrc (where you've defined your add function) is only read for interactive shells.

您可以指示Vim使用交互式shell:

You can instruct Vim to use an interactive shell:

:set shellcmdflag=-ic

这可能会使外部命令的调用变慢(由于评估Bash初始化的开销).

This may make external command invocations slighly slower (due to the overhead in evaluating your Bash initializations).

或者，您可以在其他地方定义该函数，因此该函数始终可用(但没有这样简单的位置；请参见man bash，尤其是INVOCATION部分).或将功能转换为可从PATH访问的单独脚本(例如~/bin/add).

Alternatively, you could define the function somewhere else, so it's always available (but there's no easy place like this; see man bash, esp. the INVOCATION section). Or turn the function into a separate script accessible from your PATH (e.g. ~/bin/add).

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