fix: unescape URL-encoded path params before OpenAPI validation #43
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gorillamux uses UseEncodedPath(), so FindRoute() returns path parameters in percent-encoded form. openapi3filter expects decoded values, which causes validation of constraints like maxLength and pattern to fail on encoded input (e.g. %2B is 3 chars but decodes to 1 char). Unescape path parameters after route matching and before passing them to openapi3filter. Fixes oapi-codegen#17 Supersedes oapi-codegen#18 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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gorillamux uses UseEncodedPath(), so FindRoute() returns path parameters in percent-encoded form. openapi3filter expects decoded values, which causes validation of constraints like maxLength and pattern to fail on encoded input (e.g. %2B is 3 chars but decodes to 1 char).
Unescape path parameters after route matching and before passing them to openapi3filter.
Fixes #17
Supersedes #18