tmux if-shell run-shell 不同的输出 [英] tmux if-shell run-shell different outputs

问题描述

下面的 is_vim 命令与 tmux if-shell 命令一起工作，以正确检测 vim 是否在当前窗格中打开，如果是，则发送下面的关键命令.

The is_vim command below works with the tmux if-shell command to properly detect if vim is open in the current pane, and if so then sends the key command below.

但是，它不适用于 run-shell，我不知道为什么.使用 run-shell，if 语句似乎总是评估为 false，它总是调用下面的 tmux select-pane 命令.

But, it is not working with run-shell, and I'm not sure why. With run-shell, the if statement always seems to evaluate to false and it always called the tmux select-pane command below.

# is_vim is directly from the setup guide for https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'" 

# Comment out one of the below to test
bind -n C-l if-shell "$is_vim" "send-keys C-l" "select-pane -R"
bind -n C-h run-shell "if [ $is_vim ]; then tmux send-keys C-l; else tmux select-pane -R; fi"

推荐答案

[ 是一个命令，不是 if 语法的一部分.展开后，你有

[ is a command, not part of if's syntax. After expansion, you have

if [ ps -o ... | grep ... ]; then

这是错误的；你只是想要

which is wrong; you just want

if ps -o ... | grep ...; then

所以去掉括号:

bind -n C-h run-shell "if $is_vim ; then tmux send-keys C-l; else tmux select-pane -R; fi"

但是，您应该能够做一些更简单的事情(未经测试):

However, you should be able to do something simpler (not tested):

bind -n C-l if-shell "[ #{pane_current_command} = vim ]" ...
bind -n C-h run-shell "if [ #{pane_current_command} = vim ]; then ..."

#{pane_current_command} 在 shell 看到命令之前被 tmux 展开.

#{pane_current_command} is expanded by tmux before the shell sees the command.

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