Mercurial > vim
annotate runtime/doc/if_lua.txt @ 4285:6c2e8074ea25 v7.3.892
updated for version 7.3.892
Problem: Still mering problems for viminfo history.
Solution: Do not merge lines when writing, don't write old viminfo lines.
author | Bram Moolenaar <bram@vim.org> |
---|---|
date | Sun, 14 Apr 2013 23:19:36 +0200 |
parents | 11d40fc82f11 |
children | 78c318784090 |
rev | line source |
---|---|
3682 | 1 *if_lua.txt* For Vim version 7.3. Last change: 2012 Jun 29 |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
2 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
3 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
4 VIM REFERENCE MANUAL by Luis Carvalho |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
5 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
6 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
7 The Lua Interface to Vim *lua* *Lua* |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
8 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
9 1. Commands |lua-commands| |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
10 2. The vim module |lua-vim| |
3450 | 11 3. List userdata |lua-list| |
12 4. Dict userdata |lua-dict| | |
13 5. Buffer userdata |lua-buffer| | |
14 6. Window userdata |lua-window| | |
15 7. The luaeval function |lua-luaeval| | |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
16 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
17 {Vi does not have any of these commands} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
18 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
19 The Lua interface is available only when Vim was compiled with the |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
20 |+lua| feature. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
21 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
22 ============================================================================== |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
23 1. Commands *lua-commands* |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
24 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
25 *:lua* |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
26 :[range]lua {chunk} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
27 Execute Lua chunk {chunk}. {not in Vi} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
28 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
29 Examples: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
30 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
31 :lua print("Hello, Vim!") |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
32 :lua local curbuf = vim.buffer() curbuf[7] = "line #7" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
33 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
34 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
35 :[range]lua << {endmarker} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
36 {script} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
37 {endmarker} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
38 Execute Lua script {script}. {not in Vi} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
39 Note: This command doesn't work when the Lua |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
40 feature wasn't compiled in. To avoid errors, see |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
41 |script-here|. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
42 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
43 {endmarker} must NOT be preceded by any white space. If {endmarker} is |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
44 omitted from after the "<<", a dot '.' must be used after {script}, like |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
45 for the |:append| and |:insert| commands. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
46 This form of the |:lua| command is mainly useful for including Lua code |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
47 in Vim scripts. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
48 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
49 Example: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
50 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
51 function! CurrentLineInfo() |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
52 lua << EOF |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
53 local linenr = vim.window().line |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
54 local curline = vim.buffer()[linenr] |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
55 print(string.format("Current line [%d] has %d chars", |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
56 linenr, #curline)) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
57 EOF |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
58 endfunction |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
59 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
60 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
61 *:luado* |
3465 | 62 :[range]luado {body} Execute Lua function "function (line, linenr) {body} |
63 end" for each line in the [range], with the function | |
64 argument being set to the text of each line in turn, | |
65 without a trailing <EOL>, and the current line number. | |
66 If the value returned by the function is a string it | |
67 becomes the text of the line in the current turn. The | |
68 default for [range] is the whole file: "1,$". | |
69 {not in Vi} | |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
70 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
71 Examples: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
72 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
73 :luado return string.format("%s\t%d", line:reverse(), #line) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
74 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
75 :lua require"lpeg" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
76 :lua -- balanced parenthesis grammar: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
77 :lua bp = lpeg.P{ "(" * ((1 - lpeg.S"()") + lpeg.V(1))^0 * ")" } |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
78 :luado if bp:match(line) then return "-->\t" .. line end |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
79 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
80 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
81 *:luafile* |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
82 :[range]luafile {file} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
83 Execute Lua script in {file}. {not in Vi} |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
84 The whole argument is used as a single file name. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
85 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
86 Examples: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
87 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
88 :luafile script.lua |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
89 :luafile % |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
90 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
91 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
92 All these commands execute a Lua chunk from either the command line (:lua and |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
93 :luado) or a file (:luafile) with the given line [range]. Similarly to the Lua |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
94 interpreter, each chunk has its own scope and so only global variables are |
3450 | 95 shared between command calls. All Lua default libraries are available. In |
96 addition, Lua "print" function has its output redirected to the Vim message | |
97 area, with arguments separated by a white space instead of a tab. | |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
98 |
2337
a0f87fc19d1d
Better conceal in help. (partly by Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2320
diff
changeset
|
99 Lua uses the "vim" module (see |lua-vim|) to issue commands to Vim |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
100 and manage buffers (|lua-buffer|) and windows (|lua-window|). However, |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
101 procedures that alter buffer content, open new buffers, and change cursor |
2337
a0f87fc19d1d
Better conceal in help. (partly by Dominique Pelle)
Bram Moolenaar <bram@vim.org>
parents:
2320
diff
changeset
|
102 position are restricted when the command is executed in the |sandbox|. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
103 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
104 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
105 ============================================================================== |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
106 2. The vim module *lua-vim* |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
107 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
108 Lua interfaces Vim through the "vim" module. The first and last line of the |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
109 input range are stored in "vim.firstline" and "vim.lastline" respectively. The |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
110 module also includes routines for buffer, window, and current line queries, |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
111 Vim evaluation and command execution, and others. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
112 |
3450 | 113 vim.list() Returns an empty list (see |List|). |
114 | |
115 vim.dict() Returns an empty dictionary (see |Dictionary|). | |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
116 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
117 vim.buffer([arg]) If "arg" is a number, returns buffer with |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
118 number "arg" in the buffer list or, if "arg" |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
119 is a string, returns buffer whose full or short |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
120 name is "arg". In both cases, returns 'nil' |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
121 (nil value, not string) if the buffer is not |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
122 found. Otherwise, if "toboolean(arg)" is |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
123 'true' returns the first buffer in the buffer |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
124 list or else the current buffer. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
125 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
126 vim.window([arg]) If "arg" is a number, returns window with |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
127 number "arg" or 'nil' (nil value, not string) |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
128 if not found. Otherwise, if "toboolean(arg)" |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
129 is 'true' returns the first window or else the |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
130 current window. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
131 |
3450 | 132 vim.type({arg}) Returns the type of {arg}. It is equivalent to |
133 Lua's "type" function, but returns "list", | |
134 "dict", "buffer", or "window" if {arg} is a | |
135 list, dictionary, buffer, or window, | |
136 respectively. Examples: > | |
137 :lua l = vim.list() | |
138 :lua print(type(l), vim.type(l)) | |
139 :" userdata list | |
140 < | |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
141 vim.command({cmd}) Executes the vim (ex-mode) command {cmd}. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
142 Examples: > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
143 :lua vim.command"set tw=60" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
144 :lua vim.command"normal ddp" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
145 < |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
146 vim.eval({expr}) Evaluates expression {expr} (see |expression|), |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
147 converts the result to Lua, and returns it. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
148 Vim strings and numbers are directly converted |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
149 to Lua strings and numbers respectively. Vim |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
150 lists and dictionaries are converted to Lua |
3450 | 151 userdata (see |lua-list| and |lua-dict|). |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
152 Examples: > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
153 :lua tw = vim.eval"&tw" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
154 :lua print(vim.eval"{'a': 'one'}".a) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
155 < |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
156 vim.line() Returns the current line (without the trailing |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
157 <EOL>), a Lua string. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
158 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
159 vim.beep() Beeps. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
160 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
161 vim.open({fname}) Opens a new buffer for file {fname} and |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
162 returns it. Note that the buffer is not set as |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
163 current. |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
164 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
165 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
166 ============================================================================== |
3450 | 167 3. List userdata *lua-list* |
168 | |
169 List userdata represent vim lists, and the interface tries to follow closely | |
170 Vim's syntax for lists. Since lists are objects, changes in list references in | |
171 Lua are reflected in Vim and vice-versa. A list "l" has the following | |
172 properties and methods: | |
173 | |
174 Properties | |
175 ---------- | |
176 o "#l" is the number of items in list "l", equivalent to "len(l)" | |
177 in Vim. | |
178 o "l[k]" returns the k-th item in "l"; "l" is zero-indexed, as in Vim. | |
179 To modify the k-th item, simply do "l[k] = newitem"; in | |
180 particular, "l[k] = nil" removes the k-th item from "l". | |
181 o "l()" returns an iterator for "l". | |
182 | |
183 Methods | |
184 ------- | |
185 o "l:add(item)" appends "item" to the end of "l". | |
186 o "l:insert(item[, pos])" inserts "item" at (optional) | |
187 position "pos" in the list. The default value for "pos" is 0. | |
188 | |
189 Examples: | |
190 > | |
191 :let l = [1, 'item'] | |
192 :lua l = vim.eval('l') -- same 'l' | |
193 :lua l:add(vim.list()) | |
194 :lua l[0] = math.pi | |
195 :echo l[0] " 3.141593 | |
196 :lua l[0] = nil -- remove first item | |
197 :lua l:insert(true, 1) | |
198 :lua print(l, #l, l[0], l[1], l[-1]) | |
199 :lua for item in l() do print(item) end | |
200 < | |
201 | |
202 ============================================================================== | |
203 4. Dict userdata *lua-dict* | |
204 | |
205 Similarly to list userdata, dict userdata represent vim dictionaries; since | |
206 dictionaries are also objects, references are kept between Lua and Vim. A dict | |
207 "d" has the following properties: | |
208 | |
209 Properties | |
210 ---------- | |
211 o "#d" is the number of items in dict "d", equivalent to "len(d)" | |
212 in Vim. | |
213 o "d.key" or "d['key']" returns the value at entry "key" in "d". | |
214 To modify the entry at this key, simply do "d.key = newvalue"; in | |
215 particular, "d.key = nil" removes the entry from "d". | |
216 o "d()" returns an iterator for "d" and is equivalent to "items(d)" in | |
217 Vim. | |
218 | |
219 Examples: | |
220 > | |
221 :let d = {'n':10} | |
222 :lua d = vim.eval('d') -- same 'd' | |
223 :lua print(d, d.n, #d) | |
224 :let d.self = d | |
225 :lua for k, v in d() do print(d, k, v) end | |
226 :lua d.x = math.pi | |
227 :lua d.self = nil -- remove entry | |
228 :echo d | |
229 < | |
230 | |
231 ============================================================================== | |
232 5. Buffer userdata *lua-buffer* | |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
233 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
234 Buffer userdata represent vim buffers. A buffer userdata "b" has the following |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
235 properties and methods: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
236 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
237 Properties |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
238 ---------- |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
239 o "b()" sets "b" as the current buffer. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
240 o "#b" is the number of lines in buffer "b". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
241 o "b[k]" represents line number k: "b[k] = newline" replaces line k |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
242 with string "newline" and "b[k] = nil" deletes line k. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
243 o "b.name" contains the short name of buffer "b" (read-only). |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
244 o "b.fname" contains the full name of buffer "b" (read-only). |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
245 o "b.number" contains the position of buffer "b" in the buffer list |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
246 (read-only). |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
247 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
248 Methods |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
249 ------- |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
250 o "b:insert(newline[, pos])" inserts string "newline" at (optional) |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
251 position "pos" in the buffer. The default value for "pos" is |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
252 "#b + 1". If "pos == 0" then "newline" becomes the first line in |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
253 the buffer. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
254 o "b:next()" returns the buffer next to "b" in the buffer list. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
255 o "b:previous()" returns the buffer previous to "b" in the buffer |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
256 list. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
257 o "b:isvalid()" returns 'true' (boolean) if buffer "b" corresponds to |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
258 a "real" (not freed from memory) Vim buffer. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
259 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
260 Examples: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
261 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
262 :lua b = vim.buffer() -- current buffer |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
263 :lua print(b.name, b.number) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
264 :lua b[1] = "first line" |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
265 :lua b:insert("FIRST!", 0) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
266 :lua b[1] = nil -- delete top line |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
267 :lua for i=1,3 do b:insert(math.random()) end |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
268 :3,4lua for i=vim.lastline,vim.firstline,-1 do b[i] = nil end |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
269 :lua vim.open"myfile"() -- open buffer and set it as current |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
270 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
271 function! ListBuffers() |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
272 lua << EOF |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
273 local b = vim.buffer(true) -- first buffer in list |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
274 while b ~= nil do |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
275 print(b.number, b.name, #b) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
276 b = b:next() |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
277 end |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
278 vim.beep() |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
279 EOF |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
280 endfunction |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
281 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
282 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
283 ============================================================================== |
3450 | 284 6. Window userdata *lua-window* |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
285 |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
286 Window objects represent vim windows. A window userdata "w" has the following |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
287 properties and methods: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
288 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
289 Properties |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
290 ---------- |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
291 o "w()" sets "w" as the current window. |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
292 o "w.buffer" contains the buffer of window "w" (read-only). |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
293 o "w.line" represents the cursor line position in window "w". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
294 o "w.col" represents the cursor column position in window "w". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
295 o "w.width" represents the width of window "w". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
296 o "w.height" represents the height of window "w". |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
297 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
298 Methods |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
299 ------- |
2373
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
300 o "w:next()" returns the window next to "w". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
301 o "w:previous()" returns the window previous to "w". |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
302 o "w:isvalid()" returns 'true' (boolean) if window "w" corresponds to |
f149bb1cf5be
Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
2345
diff
changeset
|
303 a "real" (not freed from memory) Vim window. |
2320
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
304 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
305 Examples: |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
306 > |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
307 :lua w = vim.window() -- current window |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
308 :lua print(w.buffer.name, w.line, w.col) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
309 :lua w.width = w.width + math.random(10) |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
310 :lua w.height = 2 * math.random() * w.height |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
311 :lua n,w = 0,vim.window(true) while w~=nil do n,w = n + 1,w:next() end |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
312 :lua print("There are " .. n .. " windows") |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
313 < |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
314 |
966a5609669e
Added Lua interfae. (Luis Carvalho)
Bram Moolenaar <bram@vim.org>
parents:
diff
changeset
|
315 ============================================================================== |
3682 | 316 7. The luaeval function *lua-luaeval* *lua-eval* |
3450 | 317 |
318 The (dual) equivalent of "vim.eval" for passing Lua values to Vim is | |
319 "luaeval". "luaeval" takes an expression string and an optional argument and | |
320 returns the result of the expression. It is semantically equivalent in Lua to: | |
321 > | |
322 local chunkheader = "local _A = select(1, ...) return " | |
323 function luaeval (expstr, arg) | |
324 local chunk = assert(loadstring(chunkheader .. expstr, "luaeval")) | |
325 return chunk(arg) -- return typval | |
326 end | |
327 < | |
328 Note that "_A" receives the argument to "luaeval". Examples: > | |
329 | |
330 :echo luaeval('math.pi') | |
331 :lua a = vim.list():add('newlist') | |
332 :let a = luaeval('a') | |
333 :echo a[0] " 'newlist' | |
334 :function Rand(x,y) " random uniform between x and y | |
335 : return luaeval('(_A.y-_A.x)*math.random()+_A.x', {'x':a:x,'y':a:y}) | |
336 : endfunction | |
337 :echo Rand(1,10) | |
338 | |
339 | |
340 ============================================================================== | |
341 vim:tw=78:ts=8:noet:ft=help:norl: |