UriTemplate should support regex matching with n times {n} pattern [SPR-13627]

[spring-projects-issues]

Nikhil opened SPR-13627 and commented

When I create a UriTemplate with the following template string where I am using the n times pattern {2} in the regex

/site.{domain:co.[a-z]{2}}

This fails to match the uri string

/site.co.eu

Looks like UriTemplate fails to properly parse the {} of any form within the regular expression

Similar improvements to parse the {} were recently applied to UriComponents and UriComponentsBuilder here #17896, but the UriTemplate still lacks this.

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Affects: 4.2.2

Issue Links:

• UriTemplate parser fails on Regular Expressions with quantifiers [SPR-13624] #18202 UriTemplate parser fails on Regular Expressions with quantifiers ("is duplicated by")
• UriComponents should support URI variables that contain a regex [SPR-13311] #17896 UriComponents should support URI variables that contain a regex
• Regression: UriTemplate does not match when URI ends with slash [SPR-13705] #18280 Regression: UriTemplate does not match when URI ends with slash

Referenced from: commits 971f046