Show HN: A collection of useful regex patterns

#1

Post by lukehaas » Tue, Nov 22, 2016, 5:24 PM UTC

Show HN: A collection of useful regex patterns
projects.lukehaas.me

Re: Show HN: A collection of useful regex patterns

#2

Post by darekkay » Wed, Nov 23, 2016, 1:13 PM UTC

Your email regex doesn't accept some basic patterns, like foo+bar@foobar.com. Also, a lot of newer TLDs can be longer than 6 symbols, like ".clothing".

See [1] or [2] for some inspiration.

[1] https://news.ycombinator.com/item?id=12448844 [2] https://news.ycombinator.com/item?id=9089129

Re: Show HN: A collection of useful regex patterns

#3

Post by Nadya » Wed, Nov 23, 2016, 4:16 PM UTC

Your hex value does not accept uppercase values. Might I suggest this instead:

    #([a-fA-F0-9]{3}){1,2}\b

Neither of ours accepts 8 character Hex values (transparency in 7th and 8th characters).

I have some more to share:

    Match the 'src' for images
    \]*[src] *= *[\"\']{0,1}([^\"\'\ >]*)

    Match ID's for Youtube Videos
    /http:\/\/(?:youtu\.be\/|(?:[a-z]{2,3}\.)?youtube\.com\/watch(?:\?|#\!)v=)([\w-]{11}).*/gi

    Match CSS comments
    \/\*[^*]*\*+([^/*][^*]*\*+)*\/

    Match every word except words in list:
    \bTarzan\b|\bJane\b|\bSuperman\b|(\w+);

Re: Show HN: A collection of useful regex patterns

#4

Post by lukehaas » Wed, Nov 23, 2016, 7:26 PM UTC

darekkay wrote: post #2

Your email regex doesn't accept some basic patterns, like foo+bar@foobar.com. Also, a lot of newer TLDs can be longer than 6 symbols, like ".clothing". See [1] or [2] for some inspiration. [1] https://news.ycombinator.com/item?id=12448844 [2] https://news.ycombinator.com/item?id=9089129

Thanks, I'll update that

Re: Show HN: A collection of useful regex patterns

#5

Post by lukehaas » Wed, Nov 23, 2016, 7:27 PM UTC

Nadya wrote: post #3

Your hex value does not accept uppercase values. Might I suggest this instead: #([a-fA-F0-9]{3}){1,2}\b Neither of ours accepts 8 character Hex values (transparency in 7th and 8th characters). I have some more to share: Match the 'src' for images \ ]*[src] *= *[\"\']{0,1}([^\"\'\ >]*) Match ID's for Youtube Videos /http:\/\/(?:youtu\.be\/|(?:[a-z]{2,3}\.)?youtube\.com\/watch(?:\?|#\!)v=)([\w-]{11}).*/gi Match CSS com…

Thanks, those are great, I'll add them in.