Regex to select only specific characters between two strings

Question

I have the following HTML:

<i>This is my first sentence.        

This is my second sentence.</i>

Using Regex (in SublimeText FYI) how can I select only the whitespace (including line breaks) between the two <i></i> brackets?

I have got this far where I can select all the characters, but how do I limit it to whitespace and new lines only?:

(?<=<i.).*?(?=</i>)

https://regex101.com/r/eZ1gT7/1986

A regexp can only match a contiguous substring, it can't match unconnected substrings. — Barmar
– Barmar, Commented Jul 16, 2019 at 21:38

Code Maniac · Accepted Answer · 2019-07-17 02:30:02Z

1

You can not do it with single regex, you can use a combination of regex

<\s*i[^>]+>([\s\S]+?)<\s*\/\s*i\s*>

Demo

This will give you values between tags <i> and text between tags is available in captured group 1, now you can loop through the matched values and find any space character

\s+

answered Jul 17, 2019 at 2:30

Code Maniac

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Emma Marcier · Accepted Answer · 2019-07-16 22:20:57Z

0

I'm guessing that maybe this expression,

(?=\s*[\n\r])(\s*)(?=\S)

replaced with a single space () might be close to what you might have in mind.

The expression is explained on the top right panel of this demo if you wish to explore/simplify/modify it.

answered Jul 16, 2019 at 22:20

Emma Marcier

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delephin · Accepted Answer · 2019-07-17 03:42:37Z

0

You'll have to loop through the captured group 2: (<i[^>]+?>)?([ \n]*)(<\/i>)?

https://regex101.com/r/wcPwkU/1

answered Jul 17, 2019 at 3:42

delephin

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