zsh缩短当前路径的长度

Question

每当我深入到目录中时,zsh都会在提示中显示完整路径.

而不是显示

x@y:~/i/am/a/really/really/really/really/long/path/somewhere

我宁愿喜欢

x@y:~/path/somewhere

我怎样才能做到这一点？

我在OSX Yosemite 10.10.4上使用zsh和iTerm.

编辑:

这是我的bashrc文件:

  1 # System-wide .bashrc file for interactive bash(1) shells.
  2 if [ -z "$PS1" ]; then
  3    return
  4 fi
  5
  6 PS1='\h:\W \u\$ '
  7 # Make bash check its window size after a process completes
  8 shopt -s checkwinsize
  9 # Tell the terminal about the working directory at each prompt.
  10 if [ "$TERM_PROGRAM" == "Apple_Terminal" ] && [ -z "$INSIDE_EMACS" ]; then
  11     update_terminal_cwd() {
  12         # Identify the directory using a "file:" scheme URL,
  13         # including the host name to disambiguate local vs.
  14         # remote connections. Percent-escape spaces.
  15         local SEARCH=' '
  16         local REPLACE='%20'
  17         local PWD_URL="file://$HOSTNAME${PWD//$SEARCH/$REPLACE}"
  18         printf '\e]7;%s\a' "$PWD_URL"
  19     }
  20     PROMPT_COMMAND="update_terminal_cwd; $PROMPT_COMMAND"
  21 fi

Answer 1

要指定路径显示的多个尾随组件,请在提示中将整数插入相应的转义序列.在你的情况下,%2~将做的伎俩.摘自zshmisc(1):

%d 
%/     Current working directory.  If an integer follows the `%', 
       it specifies a number of trailing components of the current 
       working directory to show; zero means the whole path.  A 
       negative integer specifies leading  components, i.e. %-1d 
       specifies the first component.

%~     As  %d  and  %/, but if the current working directory starts
       with $HOME, that part is replaced by a `~'. Furthermore, if 
       it has a named directory as its prefix, that part is replaced 
       by a `~' followed by the name of the directory, but only if 
       the result is shorter than the full path; see Dynamic and 
       Static named directories in zshexpn(1).