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ngn999/gist:3148484

Created July 20, 2012 03:32
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正则表达式的向后查找, 向前查找
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gistfile1.md

向后查找:

echo "pt=1234" | grep -Po '(?<=pt=)\d+'

向前查找:

echo "1234pt=" | grep -Po '\d+(?=pt=)'
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ngn999 commented Jul 20, 2012

Emacs Lisp里的正则也应该有这一套东西, 在做语法高亮时大有用途.

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ngn999 commented Sep 21, 2012

elisp里是木有的.

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