FYI, I'm getting this backtrace when using gtkspell 2.0.1 with
Pan with the old gtkspell 2.0.0 API calls.
#0 0xfe7517e8 in strncasecmp () from /usr/lib/libc.so.1
#1 0xfeade7ec in g_strncasecmp (s1=0x0, s2=0xff33b8c8 "C", n=1) at
gstrfuncs.c:1651
#2 0xff336578 in gtkspell_set_language_internal (spell=0x32a340, lang=0x0,
error=0x0) at gtkspell.c:338
#3 0xff336a88 in gtkspell_new_attach (view=0x32b850, lang=0x0, error=0x0) at
gtkspell.c:403
#4 0xff336fe4 in gtkspell_attach (view=0x32b850) at gtkspell.c:497