Trace output when XWTRACELC=2

Figure 1 is a partial trace showing typical types of information displayed by locale-sensitive routines.

Figure 1. Example of X Application trace output when XWTRACELC=2

lcPubWrap:_XlcCreateLC(C)
 lcCT:_XlcAddCT(ISO8859-1:GL,"(B)
 lcCT:_XlcParseCT
 lcCT:_XlcGetCharSetFromEncoding( (B)
 lcCT:_XlcParseCT returning: 28 charset 0
 lcCharSet:_XlcCreateDefaultCharSet(ISO8859-1:GL,""a)
 lcCT:_XlcParseCharSet
 lcCT:_XlcParseCT
 lcCT:_XlcGetCharSetFromEncoding( (B)
 lcCT:_XlcParseCT returning: 28 charset 0
 lcCharSet:_XlcAddCharSet(ISO8859-1:GL)
 lcCharSet:_XlcGetCharSet(ISO8859-1:GL)
    returned NULL
 lcCT:_XlcAddCT   returning: 7f994d8
⋮ (trace statements in this section have been deleted)
 lcCT:_XlcAddCT(CNS11643.1986-1:GL,"$(H)
 lcCT:_XlcParseCT
 lcCT:_XlcGetCharSetFromEncoding( $(H)
 lcCT:_XlcParseCT returning: 2428 charset 0
 lcCharSet:_XlcCreateDefaultCharSet(CNS11643.1986-1:GL,"""+)
 lcCT:_XlcParseCharSet
 lcCT:_XlcParseCT
lcCT:_XlcGetCharSetFromEncoding( $(H)
 lcCT:_XlcParseCT returning: 2428 charset 0
 lcCharSet:_XlcAddCharSet(CNS11643.1986-1:GL)
 lcCharSet:_XlcGetCharSet(CNS11643.1986-1:GL)
    returned NULL
 lcCT:_XlcAddCT   returning: 7f9c4e0
 lcCT:_XlcAddCT(TIS620.2533-1:GR,"-T)
 lcCT:_XlcParseCT
 lcCT:_XlcParseCT returning: 80 charset 0
 lcFile:_XlcResolveLocaleName(C,""," ""},"2h",)
 lcFile:_XlcResolveName(C,/usr/lib/X11/locale/locale.alias)
 lcFile:_XlcFileName(7f99420,locale)
 lcFile:_XlcResolveLocaleName(C,,"","","")
 lcFile:_XlcResolveName(C,/usr/lib/X11/locale/locale.alias)
 lcFile:_XlcResolveName(C,/usr/lib/X11/locale/locale.dir)
 lcDB:CreateDatabase(/usr/lib/X11/locale/C/XLC_LOCALE)

   0: XLC_XLOCALE, cs0.ct_encoding,      1: ISO8859-1: GL,
   1: XLC_XLOCALE, cs0.wc_encoding,      1: \x00000000,
   2: XLC_XLOCALE, cs0.length,   1: 1,
   3: XLC_XLOCALE, cs0.side,     1: GL:Default,
   4: XLC_XLOCALE, wc_shift_bits,        1: 8,
   5: XLC_XLOCALE, wc_encoding_mask,     1: \x00008080,
   6: XLC_XLOCALE, state_depend_encoding,        1: False,
   7: XLC_XLOCALE, mb_cur_max,   1: 1,
   8: XLC_XLOCALE, encoding_name,        1: STRING,
   9: XLC_FONTSET, fs0.font,     1: ISO8859-1:GL,
  10: XLC_FONTSET, fs0.charset,          1: ISO8859-1:GL,
 ***
 ***
   lcDB:_XlcGetResource(7f99420,XLC_XLOCALE,mb_cur_max)
 lcDB:_XlcGetLocaleDataBase(7f99420,XLC_XLOCALE,mb_cur_max)
 lcDB:_XlcGetResource(7f99420,XLC_XLOCALE,state_dependent)
 lcDB:_XlcGetLocaleDataBase(7f99420,XLC_XLOCALE,state_dependent)
    returning NULL
 lcDB:_XlcGetResource(7f99420,XLC_XLOCALE,encoding_name)
 lcDB:_XlcGetLocaleDataBase(7f99420,XLC_XLOCALE,encoding_name)
    returning lcd=7f99420
 lcFile:_XlcResolveLocaleName(C,"",,"",)
 lcFile:_XlcResolveName(C,/usr/lib/X11/locale/locale.alias)

Each line of trace provides:

The name of the locale routine.
The function invoked within that locale routine.
Where pertinent, charset name or encoding information, or charset name and encoding information.
If exiting the invoked function, the trace statement indicates that the function is returning.