[LyX/master] invert non-supported backends for ltx-talk

[Juergen Spitzmueller]

commit 1844b20d929466ab6cb9ad479c2dabe2c8695002
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Mon May 18 10:48:42 2026 +0200

    invert non-supported backends for ltx-talk
---
 development/autotests/invertedTests | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/development/autotests/invertedTests b/development/autotests/invertedTests
index 61fc5654f9..3136cfffe5 100644
--- a/development/autotests/invertedTests
+++ b/development/autotests/invertedTests
@@ -347,6 +347,10 @@ export/export/latex/languages/supported-languages_babel_auto-legacy_(dvi|pdf|pdf
 # ! Package babel Error: You haven't defined the language 'mainlocalename' yet.
 export/export/latex/languages/supported-languages_babel_non-tex_(dvi3|pdf4|pdf5)_systemF
 
+# The ltx-talk class only supports pdflatex and lualatex since it employs modern latex3 and tagging
+# features that are only implemented in these backends
+export/(examples|templates)/(|de/)Presentations/LTX-Talk_(dvi|pdf|pdf3|dvi3)(|_systemF|_texF)
+
 
 # ================================================
 Sublabel: externalissues