negative-lookbehind

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Regex: Difference betwen negative lookbehind and negation

From regular-expressions.info: \\b\\w+(?<!s)\\b. This is definitely not the same as \\b\\w+[^s]\\b. When applied to Jon\'s, the former will match Jon and the latter Jon\' (including the apostroph[详细]

2023-04-01 19:00 分类：问答
How to use a negative lookbehind

Basically, I am changing any and all hexadecimal values with a blue hue to its red hue counterpart in a given stylesheet (i.e. #00f is changed to #ff0000 (my function outputs six character hexadecimal[详细]

2023-03-28 02:42 分类：问答
Regex: remove scheme unless it's http(s). (capture negative lookbehind pattern)

I\'m having a regex blackout here. How do I capture a negative lookbehind pattern again? I\'m trying to remo开发者_运维百科ve the scheme (including ://) of a uri unless it is http/https. I\'m half wa[详细]

2023-02-21 22:32 分类：问答
Making Regular Expression more efficient

I\'m attempting to determine the end of an English sentence (only approximately), by looking for \"!\", \"?\" or \".\", but in the case of \".\" only when not preceeded by common abbreviations such as[详细]

2023-01-20 07:26 分类：问答
negative lookbehind and greedy quantifiers in php

I\'m using a regex to find any URLs and link them accordingly. However, I do not want to linkify any URLs that are already linked so I\'m using lookbehind to see if the URL has an href before it.[详细]

2023-01-20 06:04 分类：问答
strange behavior in vim with negative look-behind

So, I am doing this search in vim: /\\(\\(unum\\)\\|\\(player\\)=\\)\\@<!\\\"1\\\" and as expected it does not match lines that have:[详细]

2022-12-27 14:09 分类：问答
Stop matching when meeting a sequence of chars: fixing a lookbehind

I have the following regexp: (?P<question>.+(?<!\\[\\[)) It is designed to match hello world! in the string hello world! [[A string typically used in programming examples]][详细]

2022-12-25 06:56 分类：问答
What's the easiest way to get an equivalent to GNU grep that supports negative lookbehinds?

I\'m trying to grep through a bunch of files in nested subdirectories to look for regular expression matches; my regex requires negative lookbehind.[详细]

2022-12-23 22:13 分类：问答
negative lookbefore for a blackslash in ruby 1.9

I want to match every \'[\' or \']\' that\'s not preceded by a backslash in ruby 1.9 I tried: /?&开发者_开发百科lt;!\\134[\\[\\]]/[详细]

2022-12-18 03:47 分类：问答