Aw: filenames on MS Windows: follow-up

[Bastian M. <bma...@we...>]

Dear Allin,

sorry for being slow to work on this. There is a fundamental issue with
the approach, which I am working on how to resolve best. Translating all
the command line arguments to UTF-8 is a great step forward and the 
loading of files works fine as you point out. But this change also 
affects and potentially breaks the -e option (try e.g. 
-d -e "print 'öäü'"). 

The best step in my opinion might be to just change gnuplot's default 
encoding to utf8. This will break backward compatibility, though. A
remedy could be new command line options -a/-u which choose the system's
default encoding ("ANSI") or the utf8 encoding.

Please find attached a simplified version of your patch, which also 
works for console mode gnuplot and other compilers than MinGW. It does
not yet address the issue discussed above, though.

Bastian

> Gesendet: Samstag, 14. November 2020 um 22:41 Uhr
> Von: "Allin Cottrell" <cot...@wf...>
> An: "gnuplot-beta" <gnu...@li...>
> Betreff: filenames on MS Windows: follow-up
>
> I'm attaching a patch against gnuplot git master which does what I 
> mentioned in 
> https://sourceforge.net/p/gnuplot/mailman/message/37141539/ That is, 
> it allows wgnuplot.exe to accept via the Windows command-line 
> unicode filenames that cannot be represented in the user's "system 
> codepage", and to successfully to open such files.
> 
> This iteration of my patch uses native win32 APIs to perform the 
> necessary recoding of filenames, as opposed to the previous 
> iteration which used GLib.
> 
> I gave evidence in 
> https://sourceforge.net/p/gnuplot/mailman/message/37143153/
> that the patch is not disruptive of gnuplot's ability to open files 
> named via the "load" command, in which case the encoding specified 
> in the gnuplot script must be respected.
> 
> The patch is activated only when compiling the program for Windows, 
> and then only when the symbol WIDE_ARGS is defined.
> 
> -- 
> Allin Cottrell
> Department of Economics
> Wake Forest University_______________________________________________
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