[texinfo.tex version 2026-07-04.10]
Consider this example.
```
\input texinfo
foo @w{@c
bar}
@bye
```
Compiling with `texi2pdf` aborts with
```
Argument of @cxxx has an extra }.
<inserted text>
@par
<to be read again>
}
l.4 bar}
```
Is this expected?
Werner
