RELEASE: Ubuntu 18.04.1 LTS
onsgmls:I: "OpenSP" version "1.5.2"
After several failed attempts to validate a developing XHTML+RDFa document, I cut and pasted the simplest possible XHTML (encl1) and atttempted to validate it within emacs+psgml. The error messages refer, not to some error in my document, but to errors in the DTD's. That's not impossible, but very improbable that it would not have been caught and passed on to the W3C.
*** onsgmls output: ***
-*- mode: compilation; default-directory: "~/LEARN/RDFa+XHTML/" -*-
Compilation started at Fri Nov 16 11:56:50
onsgmls -s --warning=all minimal.xhtml
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:273:27:E: omitted tag minimization parameter can be omitted only if OMITTAG NO is specified
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:275:8:E: character ":" invalid: only "CDATA", "ENTITIES", "ENTITY", "ID", "IDREF", "IDREFS", "NAME", "NAMES", "NMTOKEN", "NMTOKENS", "NOTATION", "NUMBER", "NUMBERS", "NUTOKEN", "NUTOKENS" and parameter separators allowed
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:289:49:E: omitted tag minimization parameter can be omitted only if OMITTAG NO is specified
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:292:8:E: character ":" invalid: only "CDATA", "ENTITIES", "ENTITY", "ID", "IDREF", "IDREFS", "NAME", "NAMES", "NMTOKEN", "NMTOKENS", "NOTATION", "NUMBER", "NUMBERS", "NUTOKEN", "NUTOKENS" and parameter separators allowed
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:301:25:E: omitted tag minimization parameter can be omitted only if OMITTAG NO is specified
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:303:8:E: character ":" invalid: only "CDATA", "ENTITIES", "ENTITY", "ID", "IDREF", "IDREFS", "NAME", "NAMES", "NMTOKEN", "NMTOKENS", "NOTATION", "NUMBER", "NUMBERS", "NUTOKEN", "NUTOKENS" and parameter separators allowed
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:309:15:E: omitted tag minimization parameter can be omitted only if OMITTAG NO is specified
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:317:15:E: omitted tag minimization parameter can be omitted only if OMITTAG NO is specified
onsgmls:<URL>http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd:319:8:E: character ":" invalid: only "CDATA", "ENTITIES", "ENTITY", "ID", "IDREF", "IDREFS", "NAME", "NAMES", "NMTOKEN", "NMTOKENS", "NOTATION", "NUMBER", "NUMBERS", "NUTOKEN", "NUTOKENS" and parameter separators allowed
*** And more like the above ***
