trying to parse the manual of the GNU Hello package
I get this
scheme@(guile-user)> (open-input-file "progetti/hello-2.6.90/doc/hello.texi")
$2 = #<input: progetti/hello-2.6.90/doc/hello.texi 18>
scheme@(guile-user)> (texi->stexi $2)
texinfo.scm:966:36: In procedure loop:
Throw to key `parser-error' with args `(#f "Unknown command" defcodeindex)'.
On Guile 2.2.6 (I built it myself)
$ opt/bin/guile --listen
GNU Guile 2.2.6
Copyright (C) 1995-2019 Free Software Foundation, Inc.
Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.
Enter `,help' for help.
scheme@(guile-user)>
On Ubuntu 18.04 on x86_64