[latex3-commits] [git/LaTeX3-latex3-latex2e] develop: Add test for unknown variants (a318beaf)

[Joseph Wright]

Repository : https://github.com/latex3/latex2e
On branch  : develop
Link       : https://github.com/latex3/latex2e/commit/a318beafb3249e3ae3cb6a8f138ae6e6de322901

>---------------------------------------------------------------

commit a318beafb3249e3ae3cb6a8f138ae6e6de322901
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Thu Jan 6 14:07:26 2022 +0000

    Add test for unknown variants


>---------------------------------------------------------------

a318beafb3249e3ae3cb6a8f138ae6e6de322901
 base/testfiles/github-0735.lvt |  4 ++++
 base/testfiles/github-0735.tlg | 43 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/base/testfiles/github-0735.lvt b/base/testfiles/github-0735.lvt
index 56195177..9b04b0f1 100644
--- a/base/testfiles/github-0735.lvt
+++ b/base/testfiles/github-0735.lvt
@@ -24,5 +24,9 @@
     \ShowCommand\baz
   }
 
+\TEST { Unknown variant }
+  {
+    \ExpandArgs{XX} \NewCommandCopy {baz} {foo}
+  }
 
 \END
diff --git a/base/testfiles/github-0735.tlg b/base/testfiles/github-0735.tlg
index 4cbf3735..a68e572c 100644
--- a/base/testfiles/github-0735.tlg
+++ b/base/testfiles/github-0735.tlg
@@ -39,3 +39,46 @@ l. ...  }
 <recently read> }
 l. ...  }
 ============================================================
+============================================================
+TEST 3:  Unknown variant 
+============================================================
+! Use of \??? doesn't match its definition.
+<argument> \???  
+                 ! LaTeX3 Error: Unknown arg expansion "XX"
+l. ...  }
+If you say, e.g., `\def\a1{...}', then you must always
+put `1' after `\a', since control sequence names are
+made up of letters only. The macro here has not been
+followed by the required stuff, so I'm ignoring it.
+! LaTeX Error: Missing \begin{document}.
+See the LaTeX manual or LaTeX Companion for explanation.
+Type  H <return>  for immediate help.
+ ...                                              
+l. ...  }
+You're in trouble here.  Try typing  <return>  to proceed.
+If that doesn't work, type  X <return>  to quit.
+Missing character: There is no o in font nullfont!
+Missing character: There is no o in font nullfont!
+! Missing control sequence inserted.
+<inserted text> 
+                \inaccessible 
+l. ...  }
+Please don't say `\def cs{...}', say `\def\cs{...}'.
+I've inserted an inaccessible control sequence so that your
+definition will be completed without mixing me up too badly.
+You can recover graciously from this error, if you're
+careful; see exercise 27.2 in The TeXbook.
+Missing character: There is no a in font nullfont!
+Missing character: There is no z in font nullfont!
+Missing character: There is no f in font nullfont!
+Missing character: There is no o in font nullfont!
+Missing character: There is no o in font nullfont!
+Missing character: There is no = in font nullfont!
+============================================================
+Overfull \hbox (20.0pt too wide) in paragraph at lines 30--31
+[] 
+\hbox(0.0+0.0)x0.0
+.\hbox(0.0+0.0)x20.0
+.\penalty 10000
+.\glue(\parfillskip) 0.0 plus 1.0fil
+.\glue(\rightskip) 0.0