[clang-format] QualifierOrder does not reorder template arguments

[mkurdej]

Found when working on #53962.

The following test fails:

FormatStyle Style = getLLVMStyle();
Style.QualifierAlignment = FormatStyle::QAS_Custom;
Style.QualifierOrder = {"type", "const"};

verifyFormat("template <typename T>\n"
             "  requires Concept<T const>\n"
             "void f();",
             "template <typename T>\n"
             "  requires Concept<const T>\n"
             "void f();",
             Style);
verifyFormat("TemplateType<T const> t;", "TemplateType<const T> t;", Style);

I think it's a legitimate request to be able to reorder qualifiers inside a requires clause or a template type argument list.

That's because we skip all the tokens from TemplateOpener till TemplateCloser.

[llvmbot]

@llvm/issue-subscribers-clang-format

[mydeveloperday]

@mkurdej thanks for the producer, I'm can't remember if the skipping was a conscious decision.

[mkurdej]

Revision link: https://reviews.llvm.org/D120710.