carbon2-commit: Document the force-coding-system-equivalency macro in coding.el.

changeset: 4639:0347879667ed19a6c266459147ca271d05581238 user: Aidan Kehoe <kehoea(a)parhasard.net&gt; date: Wed Feb 04 12:41:14 2009 +0000 files: lisp/ChangeLog lisp/coding.el description: Document the force-coding-system-equivalency macro in coding.el. lisp/ChangeLog addition: 2009-02-04 Aidan Kehoe <kehoea(a)parhasard.net&gt; * coding.el (force-coding-system-equivalency): Document this macro and the motivation for it. diff -r 8891b0477058c16e7c74700cb279cba0ad8fcb39 -r 0347879667ed19a6c266459147ca271d05581238 lisp/ChangeLog --- a/lisp/ChangeLog Wed Feb 04 12:35:45 2009 +0000 +++ b/lisp/ChangeLog Wed Feb 04 12:41:14 2009 +0000 ＠＠ -1,3 +1,8 ＠＠ 2009-01-15 Aidan Kehoe <kehoea＠parhasa +2009-02-04 Aidan Kehoe <kehoea(a)parhasard.net&gt; + + * coding.el (force-coding-system-equivalency): + Document this macro and the motivation for it. + 2009-01-15 Aidan Kehoe <kehoea(a)parhasard.net&gt; * coding.el (force-coding-system-equivalency): diff -r 8891b0477058c16e7c74700cb279cba0ad8fcb39 -r 0347879667ed19a6c266459147ca271d05581238 lisp/coding.el --- a/lisp/coding.el Wed Feb 04 12:35:45 2009 +0000 +++ b/lisp/coding.el Wed Feb 04 12:41:14 2009 +0000 ＠＠ -246,6 +246,14 ＠＠ if does not differ from the encoded stri ;;; Make certain variables equivalent to coding-system aliases: (macrolet ((force-coding-system-equivalency (&rest details-list) + "Certain coding-system aliases should correspond to certain variables. + +This macro implements that correspondence. This gives us compatiblity with +other Mule implementations (which don't use the coding system aliases), and +a certain amount of freedom of implementation for XEmacs; using a variable's +value in C for every file operation or write to a terminal in C is probably +an improvement on the hash-table lookup(s) necessary for a coding system +alias, though we haven't profiled this yet to see if it makes a difference." (loop for (alias variable-symbol) in details-list with result = (list 'progn) _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-patches