`path` methods taking `codecvt` should perform `char`<->`char` code conversion

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
cpp
Domain
operating-systems

Research direction

Start with the path constructor, assignment, and appending overloads that accept codecvt_type, then compare their behavior with the cited filesystem standard clauses. Verify the char-to-char case performs conversion through wchar_t and then through path::codecvt(); done means all affected overloads follow that two-stage conversion.

Written by the indexing model from the issue text.

Description

Currently, constructor/assignment/appending methods that accept codecvt_type arguments only perform character code conversion when the source character type does not match path::value_type. C++ standard requires (e.g. here and here) that when both path::value_type and source value type are char the conversion is performed twice: first, from source encoding to wchar_t using the supplied codecvt_type facet, then from wchar_t to native path character encoding using path::codecvt().

Dominant language
C++
Stars
180
Forks
168
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