Gettext/Tcl

15.5.20 Tcl - Tk’s scripting language

RPMs: tcl
Ubuntu packages: tcl
File extension: tcl
String syntax: "abc"
gettext shorthand: [_ "abc"]
gettext/ngettext functions: ::msgcat::mc
textdomain: —
bindtextdomain: —, use ::msgcat::mcload instead
setlocale: automatic, uses LANG, but ignores LC_MESSAGES and LC_ALL
Prerequisite: package require msgcat proc _ {s} {return [::msgcat::mc $s]}
Use or emulate GNU gettext: —, uses a Tcl specific message catalog format
Extractor: xgettext -k_
Formatting with positions: format "%2\$d %1\$d"
Portability: fully portable
po-mode marking: —

Two examples are available in the examples directory: hello-tcl, hello-tcl-tk.

Before marking strings as internationalizable, substitutions of variables into the string need to be converted to format applications. For example, "file $filename not found" becomes [format "file %s not found" $filename]. Only after this is done, can the strings be marked and extracted. After marking, this example becomes [format [_ "file %s not found"] $filename] or [msgcat::mc "file %s not found" $filename]. Note that the msgcat::mc function implicitly calls format when more than one argument is given.