What the document said reaches the caller - #361
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\message and \typeout are the one channel TeX gives a SOURCE for reporting what it decided — which branch an \ifx took, which driver a package picked, what \the of a length holds. A real TeX prints it to the terminal and the log. The engine collected it all along: Run returns it as its first result. But the rendering entry points (CompileToPDFDiag and the rest) did not, so every tool built on them was deaf to it — including our own gotex. Diagnosing pgf today, a probe written the way TeX documents it printed nothing at all, and the answers had to be typeset onto a page and read back with pdftotext instead. Diagnostics gains Messages, and gotex a -messages flag that prints it to stderr. Off by default, and it prints no heading when the document said nothing, so a quiet render stays quiet. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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\messageand\typeoutare the one channel TeX gives a source for reporting what it decided — which branch an\ifxtook, which driver a package picked, what\theof a length holds. A real TeX prints it to the terminal and the log.The engine collected it all along:
Runreturns it as its first result. But the rendering entry points (CompileToPDFDiagand the rest) did not, so every tool built on them was deaf to it —gotexincluded. Diagnosing pgf today, a probe written the way TeX documents it printed nothing, and the answers had to be typeset onto a page and read back withpdftotextinstead.DiagnosticsgainsMessages;gotexgains-messages. Off by default, and no heading is printed when the document said nothing, so a quiet render stays quiet. All three states are tested.🤖 Generated with Claude Code