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limit allowed characters to UTF-8 range (0x10FFFF) - #444
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KapitanOczywisty
approved these changes
Oct 21, 2021
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@IonBazan could you take a look at the conflicts? |
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@darangi fixed 😉 |
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Requirements
This change limits valid characters recognized to 0x10FFFF according to UTF-8 specification.
Description of the Change
This is to make the regular expressions PCRE-compliant, where matched characters should not fall out of UTF-8 bounds: https://www.pcre.org/original/doc/html/pcreunicode.html
Since UTF-8 is a standard encoding for PHP files according to PSR-1, I don't see a point supporting any invalid Unicode characters.
Alternate Designs
Benefits
The reason for this change is actually to make GitHub Linguist support this grammar as it sticks to strict PCRE rules.
Before
After
Possible Drawbacks
Any invalid character will stop being recognized as a variable name but that shouldn't occur in real world.
Applicable Issues
github-linguist/linguist#5522
While awaiting for workflow run approval, let me just confirm that tests are passing locally.