Re: Skip filename recoding tests on MS-Windows

[Eli Zaretskii]

> Date: Sun, 23 Oct 2022 20:22:29 +0200
> From: pertusus@free.fr
> Cc: GavinSmith0123@gmail.com, bug-texinfo@gnu.org
> 
> The failure of manual_include_accented_file_name_latin1_explicit_encoding
> is more surprising to me, as in that case INPUT_FILE_NAME_ENCODING is
> set to ISO-8859-1, so I do not understand why the test fails, the
> reverse encoding from UTF-8 to ISO-8859-1 should lead to a path that can
> be found.  The function where paths are looked for is
> locate_include_file() in input.c, it could be where something unexpected
> happens, maybe if stat() on Windows does some kind of conversion.
> 
> 
> Debugging further the 
> manual_include_accented_file_name_latin1_explicit_encoding
> test would require showing the string bytes before and after the call to
> encode_file_name() in end_line.c, and then, if the string bytes seem to
> match the expected latin1 string with \xEE for î, check if something
> unexpected happens in locate_include_file, maybe checking what are the
> values of filename to check if there is indeed one that should lead to
> stat giving a 0 return value.  
> 
> I do not know if it is practical for you to do that Eli?
> 
> The texi2any.pl call for that test should be something like:
> 
> perl -w ./..//texi2any.pl -c TEXI2HTML --force --conf-dir ./../t/init/ 
> --conf-dir ./../init --conf-dir ./../ext -I ./formatting/ -I formatting// -I 
> ./ -I .  --error-limit=1000 -c TEST=1  --output 
> formatting//out_parser/manual_include_accented_file_name_latin1_explicit_encoding/
>  --info -c INPUT_FILE_NAME_ENCODING=ISO-8859-1 -D 'needrecodedfilenames Need 
> recoded file names' 
> ./formatting//manual_include_accented_file_name_latin1.texi

I've added debugging printouts and ran the above command.  What I see
is that encode_file_name doesn't encode the file name at all, so it
stays in its UTF-8 encoding, and the 'stat' in locate_include_file
cannot find a file by that name.  The reason encode_file_name doesn't
encode is that reverse_iconv is zero at entry to encode_file_name, and
all of input_file_name_encoding, doc_encoding_for_input_file_name, and
locale_encoding are NULL.  So none of the calls to iconv are made,
reverse_iconv stays zero, and the file name is returned in its
original encoding.

Let me know if you want me to debug this further.