Commit 2f3655c9c3c6ab8c1fdab17e7afe4080ad7ffc1b
2025-05-20T19:40:06
parser: Pop PEs that start markup declarations explicitly We currently only handle "Validity constraint: Proper Declaration/PE Nesting", but we must detect "Well-formedness constraint: PE Between Declarations" separately: > The replacement text of a parameter entity reference in a DeclSep must > match the production extSubsetDecl. PEs in DeclSeps are PEs that start with a full markup declaration (or another PE). These are handled in xmParse{Internal|External}Subset. We set a flag on these PEs and don't close them implicitly in xmlSkipBlankCharsPE. This will make unterminated declarations in such PEs cause a parser error. The PEs are closed explicitly in xmParse{Internal|External}Subset, the only location where they are allowed to end.