diff options
Diffstat (limited to 'chapter07/console.xml')
| -rw-r--r-- | chapter07/console.xml | 55 |
1 files changed, 30 insertions, 25 deletions
diff --git a/chapter07/console.xml b/chapter07/console.xml index 54056a2aa..9296952e6 100644 --- a/chapter07/console.xml +++ b/chapter07/console.xml @@ -59,8 +59,8 @@ <para>This variable specifies the arguments for the <command>loadkeys</command> program, typically, the name of keymap to load, e.g., <quote>es</quote>. If this variable is not set, the - bootscript will not run the <command>loadkeys</command> program, - and the default kernel keymap will be used.</para> + bootscript will not run the <command>loadkeys</command> program, + and the default kernel keymap will be used.</para> </listitem> </varlistentry> @@ -82,13 +82,16 @@ <para>This variable specifies the arguments for the <command>setfont</command> program. Typically, this includes the font name, <quote>-m</quote>, and the name of the application character - map to load. E.g., in order to load the <quote>lat1-16</quote> font - together with the <quote>8859-1</quote> application character map - (as it is appropriate in the USA), <!-- because of the copyright sign --> - set this variable to <quote>lat1-16 -m 8859-1</quote>. - If this variable is not set, the bootscript will not run the - <command>setfont</command> program, and the default VGA font will be - used together with the default application character map.</para> + map to load. E.g., in order to load the <quote>lat1-16</quote> font + together with the <quote>8859-1</quote> application character map + (as it is appropriate in the USA), + <!-- because of the copyright sign --> + set this variable to <quote>lat1-16 -m 8859-1</quote>. + In UTF-8 mode, the kernel uses the application character map for + conversion of composed 8-bit key codes in the keymap to UTF-8, and thus + the argument of the "-m" parameter should be set to the encoding of the + composed key codes in the keymap.</para> + </listitem> </varlistentry> @@ -96,7 +99,7 @@ <term>UNICODE</term> <listitem> <para>Set this variable to <quote>1</quote>, <quote>yes</quote> or - <quote>true</quote> in order to put the + <quote>true</quote> in order to put the console into UTF-8 mode. This is useful in UTF-8 based locales and harmful otherwise.</para> </listitem> @@ -108,7 +111,7 @@ <para>For many keyboard layouts, there is no stock Unicode keymap in the Kbd package. The <command>console</command> bootscript will convert an available keymap to UTF-8 on the fly if this variable is - set to the encoding of the available non-UTF-8 keymap.</para> + set to the encoding of the available non-UTF-8 keymap.</para> </listitem> </varlistentry> @@ -183,17 +186,17 @@ EOF</userinput></screen> </listitem> <listitem> - <para>There is no pre-made UTF-8 Russian keymap, therefore it has to be - produced by converting the existing KOI8-R keymap as illustrated - below:</para> + <para>The following example illustrates keymap autoconversion from + ISO-8859-15 to UTF-8 and enabling dead keys in Unicode mode:</para> <screen role="nodump"><userinput>cat > /etc/sysconfig/console << "EOF" <literal># Begin /etc/sysconfig/console UNICODE="1" -KEYMAP="ru-ms" -LEGACY_CHARSET="koi8-r" -FONT="LatArCyrHeb-16" +KEYMAP="de-latin1" +KEYMAP_CORRECTIONS="euro2" +LEGACY_CHARSET="iso-8859-15" +FONT="LatArCyrHeb-16 -m 8859-15" # End /etc/sysconfig/console</literal> EOF</userinput></screen> @@ -204,14 +207,16 @@ EOF</userinput></screen> character by themselves, but put an accent on the character produced by the next key) or define composition rules (such as: <quote>press Ctrl+. A E to get Æ</quote> in the default keymap). - Linux-&linux-version; in UTF-8 keyboard mode assumes that accented - characters produced via dead keys or composing are in the Latin-1 range - of Unicode, and it is impossible to change this assumption. Thus, - accented characters needed for, e.g., the Czech language, can't be typed - on Linux console in UTF-8 mode (but files containing these characters can - be displayed correctly). The solution is either to avoid the use of - UTF-8, or to install the X window system that doesn't have this - limitation in its input handling.</para> + Linux-&linux-version; interprets dead keys and composition rules in the + keymap correctly only when the source characters to be composed together + are not multibyte. This deficiency doesn't affect keymaps for European + languages, because there accents are added to unaccented ASCII + characters, or two ASCII characters are composed together. However, in + UTF-8 mode it is a problem, e.g., for the Greek language, where one + sometimes needs to put an accent on the letter <quote>alpha</quote>. + The solution is either to avoid the use of UTF-8, or to install the + X window system that doesn't have this limitation in its input + handling.</para> </listitem> <listitem> |