Mercurial > hg > xemacs-beta
comparison man/lispref/display.texi @ 398:74fd4e045ea6 r21-2-29
Import from CVS: tag r21-2-29
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 11:13:30 +0200 |
| parents | 6240c7796c7a |
| children | 501cfd01ee6d |
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| 397:f4aeb21a5bad | 398:74fd4e045ea6 |
|---|---|
| 872 | 872 |
| 873 @item | 873 @item |
| 874 All other codes in the range 0 through 31, and code 127, display in one | 874 All other codes in the range 0 through 31, and code 127, display in one |
| 875 of two ways according to the value of @code{ctl-arrow}. If it is | 875 of two ways according to the value of @code{ctl-arrow}. If it is |
| 876 non-@code{nil}, these codes map to sequences of two glyphs, where the | 876 non-@code{nil}, these codes map to sequences of two glyphs, where the |
| 877 first glyph is the @sc{ASCII} code for @samp{^}. (A display table can | 877 first glyph is the @sc{ascii} code for @samp{^}. (A display table can |
| 878 specify a glyph to use instead of @samp{^}.) Otherwise, these codes map | 878 specify a glyph to use instead of @samp{^}.) Otherwise, these codes map |
| 879 just like the codes in the range 128 to 255. | 879 just like the codes in the range 128 to 255. |
| 880 | 880 |
| 881 @item | 881 @item |
| 882 Character codes 128 through 255 map to sequences of four glyphs, where | 882 Character codes 128 through 255 map to sequences of four glyphs, where |
| 883 the first glyph is the @sc{ASCII} code for @samp{\}, and the others are | 883 the first glyph is the @sc{ascii} code for @samp{\}, and the others are |
| 884 digit characters representing the code in octal. (A display table can | 884 digit characters representing the code in octal. (A display table can |
| 885 specify a glyph to use instead of @samp{\}.) | 885 specify a glyph to use instead of @samp{\}.) |
| 886 @end itemize | 886 @end itemize |
| 887 | 887 |
| 888 The usual display conventions apply even when there is a display | 888 The usual display conventions apply even when there is a display |
| 919 @section Display Tables | 919 @section Display Tables |
| 920 | 920 |
| 921 @cindex display table | 921 @cindex display table |
| 922 You can use the @dfn{display table} feature to control how all 256 | 922 You can use the @dfn{display table} feature to control how all 256 |
| 923 possible character codes display on the screen. This is useful for | 923 possible character codes display on the screen. This is useful for |
| 924 displaying European languages that have letters not in the @sc{ASCII} | 924 displaying European languages that have letters not in the @sc{ascii} |
| 925 character set. | 925 character set. |
| 926 | 926 |
| 927 The display table maps each character code into a sequence of | 927 The display table maps each character code into a sequence of |
| 928 @dfn{runes}, each rune being an image that takes up one character | 928 @dfn{runes}, each rune being an image that takes up one character |
| 929 position on the screen. You can also define how to display each rune | 929 position on the screen. You can also define how to display each rune |
| 1038 ;; @r{(Codes 128--159 are the additional control characters.)} | 1038 ;; @r{(Codes 128--159 are the additional control characters.)} |
| 1039 (standard-display-8bit 160 255) | 1039 (standard-display-8bit 160 255) |
| 1040 @end example | 1040 @end example |
| 1041 | 1041 |
| 1042 If you are editing buffers written in the ISO Latin 1 character set and | 1042 If you are editing buffers written in the ISO Latin 1 character set and |
| 1043 your terminal doesn't handle anything but @sc{ASCII}, you can load the | 1043 your terminal doesn't handle anything but @sc{ascii}, you can load the |
| 1044 file @file{iso-ascii} to set up a display table that displays the other | 1044 file @file{iso-ascii} to set up a display table that displays the other |
| 1045 ISO characters as explanatory sequences of @sc{ASCII} characters. For | 1045 ISO characters as explanatory sequences of @sc{ascii} characters. For |
| 1046 example, the character ``o with umlaut'' displays as @samp{@{"o@}}. | 1046 example, the character ``o with umlaut'' displays as @samp{@{"o@}}. |
| 1047 | 1047 |
| 1048 Some European countries have terminals that don't support ISO Latin 1 | 1048 Some European countries have terminals that don't support ISO Latin 1 |
| 1049 but do support the special characters for that country's language. You | 1049 but do support the special characters for that country's language. You |
| 1050 can define a display table to work one language using such terminals. | 1050 can define a display table to work one language using such terminals. |