xref: /vim-8.2.3635/runtime/doc/mlang.txt (revision 207f0093)
1*mlang.txt*     For Vim version 8.2.  Last change: 2020 Aug 15
2
3
4		  VIM REFERENCE MANUAL    by Bram Moolenaar
5
6
7Multi-language features				*multilang* *multi-lang*
8
9This is about using messages and menus in various languages.  For editing
10multibyte text see |multibyte|.
11
12The basics are explained in the user manual: |usr_45.txt|.
13
141. Messages			|multilang-messages|
152. Menus			|multilang-menus|
163. Scripts			|multilang-scripts|
17
18Also see |help-translated| for multi-language help.
19
20{not available when compiled without the |+multi_lang| feature}
21
22==============================================================================
231. Messages						*multilang-messages*
24
25Vim picks up the locale from the environment.  In most cases this means Vim
26will use the language that you prefer, unless it's not available.
27
28To see a list of supported locale names on your system, look in one of these
29directories (for Unix):
30	/usr/lib/locale ~
31	/usr/share/locale ~
32Unfortunately, upper/lowercase differences matter.  Also watch out for the
33use of "-" and "_".
34
35					    *:lan* *:lang* *:language* *E197*
36:lan[guage]
37:lan[guage] mes[sages]
38:lan[guage] cty[pe]
39:lan[guage] tim[e]
40:lan[guage] col[late]
41			Print the current language (aka locale).
42			With the "messages" argument the language used for
43			messages is printed.  Technical: LC_MESSAGES.
44			With the "ctype" argument the language used for
45			character encoding is printed.  Technical: LC_CTYPE.
46			With the "time" argument the language used for
47			strftime() is printed.  Technical: LC_TIME.
48			With the "collate" argument the language used for
49			collation order is printed.  Technical: LC_COLLATE.
50			Without argument all parts of the locale are printed
51			(this is system dependent).
52			The current language can also be obtained with the
53			|v:lang|, |v:ctype|, |v:collate| and |v:lc_time|
54			variables.
55
56:lan[guage] {name}
57:lan[guage] mes[sages] {name}
58:lan[guage] cty[pe] {name}
59:lan[guage] tim[e] {name}
60:lan[guage] col[late] {name}
61			Set the current language (aka locale) to {name}.
62			The locale {name} must be a valid locale on your
63			system.  Some systems accept aliases like "en" or
64			"en_US", but some only accept the full specification
65			like "en_US.ISO_8859-1".  On Unix systems you can use
66			this command to see what locales are supported: >
67				:!locale -a
68<			With the "messages" argument the language used for
69			messages is set.  This can be different when you want,
70			for example, English messages while editing Japanese
71			text.  This sets $LC_MESSAGES.
72			With the "ctype" argument the language used for
73			character encoding is set.  This affects the libraries
74			that Vim was linked with.  It's unusual to set this to
75			a different value from 'encoding' or "C".  This sets
76			$LC_CTYPE.
77			With the "time" argument the language used for time
78			and date messages is set.  This affects strftime().
79			This sets $LC_TIME.
80			With the "collate" argument the language used for the
81			collation order is set.  This affects sorting of
82			characters. This sets $LC_COLLATE.
83			Without an argument all are set, and additionally
84			$LANG is set.
85			When compiled with the |+float| feature the LC_NUMERIC
86			value will always be set to "C", so that floating
87			point numbers use '.' as the decimal point.
88			This will make a difference for items that depend on
89			the language (some messages, time and date format).
90			Not fully supported on all systems
91			If this fails there will be an error message.  If it
92			succeeds there is no message.  Example: >
93				:language
94				Current language: C
95				:language de_DE.ISO_8859-1
96				:language mes
97				Current messages language: de_DE.ISO_8859-1
98				:lang mes en
99<
100
101MS-WINDOWS MESSAGE TRANSLATIONS				*win32-gettext*
102
103If you used the self-installing .exe file, message translations should work
104already.  Otherwise get the libintl.dll file if you don't have it yet:
105
106	http://sourceforge.net/projects/gettext
107Or:
108	https://mlocati.github.io/gettext-iconv-windows/
109
110This also contains tools xgettext, msgformat and others.
111
112libintl.dll should be placed in same directory as (g)vim.exe, or one of the
113directories listed in the PATH environment value.  Vim also looks for the
114alternate names "libintl-8.dll" and "intl.dll".
115
116Message files (vim.mo) have to be placed in "$VIMRUNTIME/lang/xx/LC_MESSAGES",
117where "xx" is the abbreviation of the language (mostly two letters).
118
119If you write your own translations you need to generate the .po file and
120convert it to a .mo file.  You need to get the source distribution and read
121the file "src/po/README.txt".
122
123To overrule the automatic choice of the language, set the $LANG variable to
124the language of your choice.  use "en" to disable translations. >
125
126  :let $LANG = 'ja'
127
128(text for Windows by Muraoka Taro)
129
130==============================================================================
1312. Menus						*multilang-menus*
132
133See |45.2| for the basics, esp. using 'langmenu'.
134
135Note that if changes have been made to the menus after the translation was
136done, some of the menus may be shown in English.  Please try contacting the
137maintainer of the translation and ask him to update it.  You can find the
138name and e-mail address of the translator in
139"$VIMRUNTIME/lang/menu_<lang>.vim".
140
141To set the font (or fontset) to use for the menus, use the |:highlight|
142command.  Example: >
143
144	:highlight Menu font=k12,r12
145
146
147ALIAS LOCALE NAMES
148
149Unfortunately, the locale names are different on various systems, even though
150they are for the same language and encoding.  If you do not get the menu
151translations you expected, check the output of this command: >
152
153	echo v:lang
154
155Now check the "$VIMRUNTIME/lang" directory for menu translation files that use
156a similar language.  A difference in a "-" being a "_" already causes a file
157not to be found!  Another common difference to watch out for is "iso8859-1"
158versus "iso_8859-1".  Fortunately Vim makes all names lowercase, thus you
159don't have to worry about case differences.  Spaces are changed to
160underscores, to avoid having to escape them.
161
162If you find a menu translation file for your language with a different name,
163create a file in your own runtime directory to load that one.  The name of
164that file could be: >
165
166	~/.vim/lang/menu_<v:lang>.vim
167
168Check the 'runtimepath' option for directories which are searched.  In that
169file put a command to load the menu file with the other name: >
170
171	runtime lang/menu_<other_lang>.vim
172
173
174TRANSLATING MENUS
175
176If you want to do your own translations, you can use the |:menutrans| command,
177explained below.  It is recommended to put the translations for one language
178in a Vim script.  For a language that has no translation yet, please consider
179becoming the maintainer and make your translations available to all Vim users.
180Send an e-mail to the Vim maintainer <[email protected]>.
181
182					*:menut* *:menutrans* *:menutranslate*
183:menut[ranslate] clear
184			Clear all menu translations.
185
186:menut[ranslate] {english} {mylang}
187			Translate menu name {english} to {mylang}.  All
188			special characters like "&" and "<Tab>" need to be
189			included.  Spaces and dots need to be escaped with a
190			backslash, just like in other |:menu| commands.
191			Case in {english} is ignored.
192
193See the $VIMRUNTIME/lang directory for examples.
194
195To try out your translations you first have to remove all menus.  This is how
196you can do it without restarting Vim: >
197	:source $VIMRUNTIME/delmenu.vim
198	:source <your-new-menu-file>
199	:source $VIMRUNTIME/menu.vim
200
201Each part of a menu path is translated separately.  The result is that when
202"Help" is translated to "Hilfe" and "Overview" to "Überblick" then
203"Help.Overview" will be translated to "Hilfe.Überblick".
204
205==============================================================================
2063. Scripts						*multilang-scripts*
207
208In Vim scripts you can use the |v:lang| variable to get the current language
209(locale).  The default value is "C" or comes from the $LANG environment
210variable.
211
212The following example shows how this variable is used in a simple way, to make
213a message adapt to language preferences of the user, >
214
215	:if v:lang =~ "de_DE"
216	:  echo "Guten Morgen"
217	:else
218	:  echo "Good morning"
219	:endif
220<
221
222 vim:tw=78:sw=4:ts=8:noet:ft=help:norl:
223