我在bash脚本中尝试了以下几种形式:
#!/bin/bash
svn diff $@ --diff-cmd /usr/bin/diff -x "-y -w -p -W $COLUMNS"
但是我无法获得正确展开COLUMNS
环境变量的语法。
我尝试过以下几种形式:
svn diff $@ --diff-cmd /usr/bin/diff -x '-y -w -p -W $COLUMNS'
和
svn diff $@ --diff-cmd /usr/bin/diff -x '-y -w -p -W ${COLUMNS}'
和
eval svn diff $@ --diff-cmd /usr/bin/diff -x "-y -w -p -W $COLUMNS"
有什么建议吗?
https://stackoverflow.com/questions/840536
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