fix 'make distcheck'

[Bruno Haible]

Hi,

During "make distcheck", I get this error:

make[1]: Entering directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub'
Making dvi in jitter
make[2]: Entering directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter'
Making dvi in gnulib-local
make[3]: Entering directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter/gnulib-local'
make[4]: Entering directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter/gnulib-local'
make[4]: Nothing to be done for 'dvi-am'.
make[4]: Leaving directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter/gnulib-local'
make[3]: Leaving directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter/gnulib-local'
make[3]: Entering directory 
'/media/develdata/devel/POKE/poke/poke-0.1-beta/_build/sub/jitter'
TEXINPUTS="../../../jitter/build-aux:$TEXINPUTS" \
MAKEINFO='/bin/bash 
/media/develdata/devel/POKE/poke/poke-0.1-beta/jitter/build-aux/missing 
makeinfo   -I example-vms/jitterlisp/doc -I 
../../../jitter/example-vms/jitterlisp/doc' \
texi2dvi  --build-dir=example-vms/jitterlisp/doc/jitterlisp.t2d -o 
example-vms/jitterlisp/doc/jitterlisp.dvi  \
`test -f 'example-vms/jitterlisp/doc/jitterlisp.texi' || echo 
'../../../jitter/'`example-vms/jitterlisp/doc/jitterlisp.texi
This is pdfTeX, Version 3.14159265-2.6-1.40.16 (TeX Live 2015/Debian) 
(preloaded format=etex)
 restricted \write18 enabled.
entering extended mode

(../../../../../../.././../../../jitter/example-vms/jitterlisp/doc/jitterlisp.t
exi
(/media/develdata/devel/POKE/poke/poke-0.1-beta/jitter/build-aux/texinfo.tex
Loading texinfo [version 2019-09-24.13]: pdf, fonts, markup, glyphs,
page headings, tables, conditionals, indexing, sectioning, toc, environments,
defuns, macros, cross references, insertions,
(/usr/share/texlive/texmf-dist/tex/generic/epsf/epsf.tex
This is `epsf.tex' v2.7.4 <14 February 2011>
) localization, formatting, and turning on texinfo input format.)
(/media/develdata/devel/POKE/poke/poke-0.1-beta/jitter/example-vms/jitterlisp/d
oc/version-jitterlisp.texi)
../../../../../../.././../../../jitter/example-vms/jitterlisp/doc/jitterlisp.te
xi:55: Cannot read language file txi-en.tex.
@documentlanguagetrywithoutunderscore ...i-#1.tex}
                                                  @else @globaldefs = 1 @inp...

@\documentlanguage ...ithoutunderscore #1_@finish 
                                                  @else @globaldefs = 1 @inp...
l.55 @documentlanguage en
                         

This is similar to the report for Bison
<https://lists.gnu.org/archive/html/bug-bison/2019-05/msg00024.html>,
which, after advice from Karl Berry, was fixed through
https://git.savannah.gnu.org/gitweb/?p=bison.git;a=commitdiff;h=70c3f3ade5a94034daf44c6d5d4644c180a484ff

The attached patch fixes it for me, when applied to the jitter submodule.
Luca?

Bruno

jitter-doc-fix.diff
Description: Text Data