On 27/11/2012 07:16, Yaakov (Cygwin/X) wrote: > On Mon, 2012-11-26 at 12:28 +0000, Jon TURNEY wrote: >> I had look at rebuilding ddd with openmotif. >> >> This shows a rather obvious problem: The initial output to the gdb window >> stops before the 'ü' in "Dorothea Lütkehaus" (internally this is ISO-8859-1 >> encoded and presumably forms an invalid UTF-8 sequence) >> >> This is listed in the ddd PROBLEMS file with solutions "don't use a UTF-8 >> locale" or "link with lesstif" :-) > > Don't use a UTF-8 locale, in this day and age? Use an inferior (and now > obsolete) implementation instead of the far-superior original? That > kind of "advice" points the finger squarely at ddd as the problem.
To be fair, that was written in 2003. >> (Even when built with lesstif, there are known character encoding issues e.g. >> source files containing UTF-8 do not display correctly in a UTF-8 locale [1], >> man/info/ddd -h are ISO-8859-1 encoded [2]) >> >> I'm not sure how to approach this. A minimal fix might be to just replace >> the >> ISO-8859-1 encoded strings with their ASCII equivalents (e.g. ü -> u), but >> since OpenMotif apparently does now know about UTF-8, a better solution might >> be to actually fix ddd, but I have no idea what would be involved. > > I would look at Fedora's and Gentoo's patchsets: > > http://pkgs.fedoraproject.org/cgit/ddd.git/tree/ > http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-util/ddd/ > > I think a combination thereof may fix most of these issues. I have already looked at those patches. A patch to to fix the manpage encoding issue is already applied in the existing package. The ddd-3.3.11-lang.patch from Fedora, forcing the locale to "C", looks like it should help, but doesn't actually seem to. I don't understand why that doesn't work, but 'export LANG=C' (which should be equivalent) does. (SUSE uses slightly more complex approach with a wrapper script for ddd which changes the locale if it is a UTF-8 one [1]) As far as I can tell, no linux distribution is currently shipping a ddd linked against an OpenMotif libXm at the moment (except maybe RH EPEL). I think some sort of code changes would be needed to properly display UTF-8 source files, although reading [2] is not that helpful in working out what they might be... [1] https://build.opensuse.org/package/view_file?file=ddd.wrapper&package=ddd&project=devel%3Atools [2] http://web.archive.org/web/20070630102512/http://www.motifzone.net/files/documents/Fonts_UTF-8_WhitePaperv6.pdf
