changeset: 4469:c661944aa2597457798ce30bdaa6ac6ddbc8c3b0 tag: tip user: Aidan Kehoe <kehoea(a)parhasard.net&gt; date: Sun May 25 22:54:33 2008 +0200 files: src/ChangeLog src/chartab.c src/editfns.c description: Fill out docstrings for #'translate-region, #'make-char-table. 2008-05-25 Aidan Kehoe <kehoea(a)parhasard.net&gt; * chartab.c (Fmake_char_table): Document the default return values for the various char table types. * editfns.c (Ftranslate_region): Document why `generic' char tables are preferable to `char' char tables for this function. diff -r a78d697ccd2c832f5770b564e944a88b4f1f2549 -r c661944aa2597457798ce30bdaa6ac6ddbc8c3b0 src/ChangeLog --- a/src/ChangeLog Sun May 25 21:11:35 2008 +0200 +++ b/src/ChangeLog Sun May 25 22:54:33 2008 +0200 ＠＠ -1,3 +1,11 ＠＠ 2008-05-21 Aidan Kehoe <kehoea＠parhasa +2008-05-25 Aidan Kehoe <kehoea(a)parhasard.net&gt; + + * chartab.c (Fmake_char_table): + Document the default return values for the various char table + types. + * editfns.c (Ftranslate_region): Document why `generic' char tables + are preferable to `char' char tables for this function. + 2008-05-21 Aidan Kehoe <kehoea(a)parhasard.net&gt; * fileio.c (Fmake_symbolic_link): diff -r a78d697ccd2c832f5770b564e944a88b4f1f2549 -r c661944aa2597457798ce30bdaa6ac6ddbc8c3b0 src/chartab.c --- a/src/chartab.c Sun May 25 21:11:35 2008 +0200 +++ b/src/chartab.c Sun May 25 22:54:33 2008 +0200 ＠＠ -566,25 +566,32 ＠＠ sorts of values. The different char tab sorts of values. The different char table types are `category' - Used for category tables, which specify the regexp categories - that a character is in. The valid values are nil or a - bit vector of 95 elements. Higher-level Lisp functions are - provided for working with category tables. Currently categories + Used for category tables, which specify the regexp categories that a + character is in. The valid values are nil or a bit vector of 95 + elements, and values default to nil. Higher-level Lisp functions + are provided for working with category tables. Currently categories and category tables only exist when Mule support is present. `char' - A generalized char table, for mapping from one character to - another. Used for case tables, syntax matching tables, - `keyboard-translate-table', etc. The valid values are characters. + A generalized char table, for mapping from one character to another. + Used for case tables, syntax matching tables, + `keyboard-translate-table', etc. The valid values are characters, + and the default result given by `get-char-table' if a value hasn't + been set for a given character or for a range that includes it, is + ?\x00. `generic' - An even more generalized char table, for mapping from a - character to anything. + An even more generalized char table, for mapping from a character to + anything. The default result given by `get-char-table' is nil. `display' - Used for display tables, which specify how a particular character - is to appear when displayed. #### Not yet implemented. + Used for display tables, which specify how a particular character is + to appear when displayed. #### Not yet implemented; currently, the + display table code uses generic char tables, and it's not clear that + implementing this char table type would be useful. `syntax' Used for syntax tables, which specify the syntax of a particular character. Higher-level Lisp functions are provided for - working with syntax tables. The valid values are integers. + working with syntax tables. The valid values are integers, and the + default result given by `get-char-table' is the syntax code for + `inherit'. */ (type)) { diff -r a78d697ccd2c832f5770b564e944a88b4f1f2549 -r c661944aa2597457798ce30bdaa6ac6ddbc8c3b0 src/editfns.c --- a/src/editfns.c Sun May 25 21:11:35 2008 +0200 +++ b/src/editfns.c Sun May 25 22:54:33 2008 +0200 ＠＠ -1824,8 +1824,12 ＠＠ nil (nil meaning don't replace.) nil (nil meaning don't replace.) If TABLE is a char-table, its elements describe the mapping between -characters and their replacements. The char-table should be of type -`char' or `generic'. +characters and their replacements. The char-table should be of type `char' +or `generic'. If the value given by `put-char-table' for a given character +is nil, that character will not be translated by `translate-region'. Since +`char' char-tables can never return nil to `put-char-table', and since most +translation involves a subset of the possible XEmacs characters, not all of +them, the most generally useful table type here is `generic'. Returns the number of substitutions performed. */ _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-patches