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annotate runtime/doc/repeat.txt @ 3023:023e84b3592c
Added tag v7-3-283 for changeset 47b6d37b6012
author | Bram Moolenaar <bram@vim.org> |
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date | Wed, 17 Aug 2011 17:18:20 +0200 |
parents | 85c5a72551e2 |
children | 2cfb68fa26cd |
rev | line source |
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2681 | 1 *repeat.txt* For Vim version 7.3. Last change: 2011 Jan 06 |
7 | 2 |
3 | |
4 VIM REFERENCE MANUAL by Bram Moolenaar | |
5 | |
6 | |
7 Repeating commands, Vim scripts and debugging *repeating* | |
8 | |
9 Chapter 26 of the user manual introduces repeating |usr_26.txt|. | |
10 | |
11 1. Single repeats |single-repeat| | |
12 2. Multiple repeats |multi-repeat| | |
13 3. Complex repeats |complex-repeat| | |
14 4. Using Vim scripts |using-scripts| | |
15 5. Debugging scripts |debug-scripts| | |
170 | 16 6. Profiling |profiling| |
7 | 17 |
18 ============================================================================== | |
19 1. Single repeats *single-repeat* | |
20 | |
21 *.* | |
22 . Repeat last change, with count replaced with [count]. | |
23 Also repeat a yank command, when the 'y' flag is | |
22 | 24 included in 'cpoptions'. Does not repeat a |
25 command-line command. | |
7 | 26 |
27 Simple changes can be repeated with the "." command. Without a count, the | |
28 count of the last change is used. If you enter a count, it will replace the | |
29 last one. If the last change included a specification of a numbered register, | |
30 the register number will be incremented. See |redo-register| for an example | |
31 how to use this. Note that when repeating a command that used a Visual | |
32 selection, the same SIZE of area is used, see |visual-repeat|. | |
33 | |
34 *@:* | |
35 @: Repeat last command-line [count] times. | |
36 {not available when compiled without the | |
37 |+cmdline_hist| feature} | |
38 | |
39 | |
40 ============================================================================== | |
41 2. Multiple repeats *multi-repeat* | |
42 | |
43 *:g* *:global* *E147* *E148* | |
44 :[range]g[lobal]/{pattern}/[cmd] | |
45 Execute the Ex command [cmd] (default ":p") on the | |
46 lines within [range] where {pattern} matches. | |
47 | |
48 :[range]g[lobal]!/{pattern}/[cmd] | |
49 Execute the Ex command [cmd] (default ":p") on the | |
50 lines within [range] where {pattern} does NOT match. | |
51 | |
52 *:v* *:vglobal* | |
53 :[range]v[global]/{pattern}/[cmd] | |
54 Same as :g!. | |
55 | |
1125 | 56 Instead of the '/' which surrounds the {pattern}, you can use any other |
57 single byte character, but not an alphanumeric character, '\', '"' or '|'. | |
58 This is useful if you want to include a '/' in the search pattern or | |
59 replacement string. | |
60 | |
61 For the definition of a pattern, see |pattern|. | |
62 | |
7 | 63 The global commands work by first scanning through the [range] lines and |
64 marking each line where a match occurs (for a multi-line pattern, only the | |
65 start of the match matters). | |
66 In a second scan the [cmd] is executed for each marked line with its line | |
67 number prepended. For ":v" and ":g!" the command is executed for each not | |
68 marked line. If a line is deleted its mark disappears. | |
69 The default for [range] is the whole buffer (1,$). Use "CTRL-C" to interrupt | |
70 the command. If an error message is given for a line, the command for that | |
71 line is aborted and the global command continues with the next marked or | |
72 unmarked line. | |
73 | |
74 To repeat a non-Ex command, you can use the ":normal" command: > | |
75 :g/pat/normal {commands} | |
76 Make sure that {commands} ends with a whole command, otherwise Vim will wait | |
77 for you to type the rest of the command for each match. The screen will not | |
78 have been updated, so you don't know what you are doing. See |:normal|. | |
79 | |
80 The undo/redo command will undo/redo the whole global command at once. | |
81 The previous context mark will only be set once (with "''" you go back to | |
82 where the cursor was before the global command). | |
83 | |
84 The global command sets both the last used search pattern and the last used | |
85 substitute pattern (this is vi compatible). This makes it easy to globally | |
86 replace a string: | |
87 :g/pat/s//PAT/g | |
88 This replaces all occurrences of "pat" with "PAT". The same can be done with: | |
89 :%s/pat/PAT/g | |
90 Which is two characters shorter! | |
91 | |
1623 | 92 When using "global" in Ex mode, a special case is using ":visual" as a |
93 command. This will move to a matching line, go to Normal mode to let you | |
94 execute commands there until you use |Q| to return to Ex mode. This will be | |
95 repeated for each matching line. While doing this you cannot use ":global". | |
96 To abort this type CTRL-C twice. | |
168 | 97 |
7 | 98 ============================================================================== |
99 3. Complex repeats *complex-repeat* | |
100 | |
101 *q* *recording* | |
102 q{0-9a-zA-Z"} Record typed characters into register {0-9a-zA-Z"} | |
103 (uppercase to append). The 'q' command is disabled | |
104 while executing a register, and it doesn't work inside | |
2681 | 105 a mapping and |:normal|. {Vi: no recording} |
7 | 106 |
107 q Stops recording. (Implementation note: The 'q' that | |
108 stops recording is not stored in the register, unless | |
109 it was the result of a mapping) {Vi: no recording} | |
110 | |
111 *@* | |
112 @{0-9a-z".=*} Execute the contents of register {0-9a-z".=*} [count] | |
113 times. Note that register '%' (name of the current | |
114 file) and '#' (name of the alternate file) cannot be | |
2681 | 115 used. |
116 The register is executed like a mapping, that means | |
117 that the difference between 'wildchar' and 'wildcharm' | |
118 applies. | |
119 For "@=" you are prompted to enter an expression. The | |
120 result of the expression is then executed. | |
121 See also |@:|. {Vi: only named registers} | |
7 | 122 |
168 | 123 *@@* *E748* |
7 | 124 @@ Repeat the previous @{0-9a-z":*} [count] times. |
125 | |
126 :[addr]*{0-9a-z".=} *:@* *:star* | |
127 :[addr]@{0-9a-z".=*} Execute the contents of register {0-9a-z".=*} as an Ex | |
128 command. First set cursor at line [addr] (default is | |
129 current line). When the last line in the register does | |
130 not have a <CR> it will be added automatically when | |
131 the 'e' flag is present in 'cpoptions'. | |
132 Note that the ":*" command is only recognized when the | |
133 '*' flag is present in 'cpoptions'. This is NOT the | |
134 default when 'nocompatible' is used. | |
135 For ":@=" the last used expression is used. The | |
136 result of evaluating the expression is executed as an | |
137 Ex command. | |
138 Mappings are not recognized in these commands. | |
139 {Vi: only in some versions} Future: Will execute the | |
140 register for each line in the address range. | |
141 | |
142 *:@:* | |
143 :[addr]@: Repeat last command-line. First set cursor at line | |
144 [addr] (default is current line). {not in Vi} | |
145 | |
146 *:@@* | |
147 :[addr]@@ Repeat the previous :@{0-9a-z"}. First set cursor at | |
148 line [addr] (default is current line). {Vi: only in | |
149 some versions} | |
150 | |
151 ============================================================================== | |
152 4. Using Vim scripts *using-scripts* | |
153 | |
154 For writing a Vim script, see chapter 41 of the user manual |usr_41.txt|. | |
155 | |
156 *:so* *:source* *load-vim-script* | |
157 :so[urce] {file} Read Ex commands from {file}. These are commands that | |
158 start with a ":". | |
716 | 159 Triggers the |SourcePre| autocommand. |
7 | 160 |
161 :so[urce]! {file} Read Vim commands from {file}. These are commands | |
162 that are executed from Normal mode, like you type | |
163 them. | |
164 When used after |:global|, |:argdo|, |:windo|, | |
165 |:bufdo|, in a loop or when another command follows | |
166 the display won't be updated while executing the | |
167 commands. | |
168 {not in Vi} | |
169 | |
170 *:ru* *:runtime* | |
171 :ru[ntime][!] {file} .. | |
172 Read Ex commands from {file} in each directory given | |
173 by 'runtimepath'. There is no error for non-existing | |
174 files. Example: > | |
175 :runtime syntax/c.vim | |
176 | |
177 < There can be multiple {file} arguments, separated by | |
178 spaces. Each {file} is searched for in the first | |
179 directory from 'runtimepath', then in the second | |
180 directory, etc. Use a backslash to include a space | |
181 inside {file} (although it's better not to use spaces | |
182 in file names, it causes trouble). | |
183 | |
184 When [!] is included, all found files are sourced. | |
185 When it is not included only the first found file is | |
186 sourced. | |
187 | |
188 When {file} contains wildcards it is expanded to all | |
189 matching files. Example: > | |
190 :runtime! plugin/*.vim | |
191 < This is what Vim uses to load the plugin files when | |
237 | 192 starting up. This similar command: > |
7 | 193 :runtime plugin/*.vim |
194 < would source the first file only. | |
195 | |
196 When 'verbose' is one or higher, there is a message | |
197 when no file could be found. | |
198 When 'verbose' is two or higher, there is a message | |
199 about each searched file. | |
200 {not in Vi} | |
201 | |
202 :scripte[ncoding] [encoding] *:scripte* *:scriptencoding* *E167* | |
203 Specify the character encoding used in the script. | |
204 The following lines will be converted from [encoding] | |
205 to the value of the 'encoding' option, if they are | |
206 different. Examples: > | |
207 scriptencoding iso-8859-5 | |
208 scriptencoding cp932 | |
209 < | |
210 When [encoding] is empty, no conversion is done. This | |
211 can be used to restrict conversion to a sequence of | |
212 lines: > | |
213 scriptencoding euc-jp | |
214 ... lines to be converted ... | |
215 scriptencoding | |
216 ... not converted ... | |
217 | |
218 < When conversion isn't supported by the system, there | |
219 is no error message and no conversion is done. | |
220 | |
221 Don't use "ucs-2" or "ucs-4", scripts cannot be in | |
222 these encodings (they would contain NUL bytes). | |
223 When a sourced script starts with a BOM (Byte Order | |
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224 Mark) in utf-8 format Vim will recognize it, no need |
7 | 225 to use ":scriptencoding utf-8" then. |
226 | |
227 When compiled without the |+multi_byte| feature this | |
228 command is ignored. | |
229 {not in Vi} | |
230 | |
231 *:scrip* *:scriptnames* | |
232 :scrip[tnames] List all sourced script names, in the order they were | |
233 first sourced. The number is used for the script ID | |
234 |<SID>|. | |
235 {not in Vi} {not available when compiled without the | |
236 |+eval| feature} | |
237 | |
238 *:fini* *:finish* *E168* | |
239 :fini[sh] Stop sourcing a script. Can only be used in a Vim | |
240 script file. This is a quick way to skip the rest of | |
241 the file. If it is used after a |:try| but before the | |
242 matching |:finally| (if present), the commands | |
243 following the ":finally" up to the matching |:endtry| | |
244 are executed first. This process applies to all | |
245 nested ":try"s in the script. The outermost ":endtry" | |
246 then stops sourcing the script. {not in Vi} | |
247 | |
248 All commands and command sequences can be repeated by putting them in a named | |
249 register and then executing it. There are two ways to get the commands in the | |
250 register: | |
251 - Use the record command "q". You type the commands once, and while they are | |
252 being executed they are stored in a register. Easy, because you can see | |
253 what you are doing. If you make a mistake, "p"ut the register into the | |
254 file, edit the command sequence, and then delete it into the register | |
255 again. You can continue recording by appending to the register (use an | |
256 uppercase letter). | |
257 - Delete or yank the command sequence into the register. | |
258 | |
259 Often used command sequences can be put under a function key with the ':map' | |
260 command. | |
261 | |
262 An alternative is to put the commands in a file, and execute them with the | |
263 ':source!' command. Useful for long command sequences. Can be combined with | |
264 the ':map' command to put complicated commands under a function key. | |
265 | |
266 The ':source' command reads Ex commands from a file line by line. You will | |
267 have to type any needed keyboard input. The ':source!' command reads from a | |
268 script file character by character, interpreting each character as if you | |
269 typed it. | |
270 | |
271 Example: When you give the ":!ls" command you get the |hit-enter| prompt. If | |
272 you ':source' a file with the line "!ls" in it, you will have to type the | |
273 <Enter> yourself. But if you ':source!' a file with the line ":!ls" in it, | |
274 the next characters from that file are read until a <CR> is found. You will | |
275 not have to type <CR> yourself, unless ":!ls" was the last line in the file. | |
276 | |
277 It is possible to put ':source[!]' commands in the script file, so you can | |
278 make a top-down hierarchy of script files. The ':source' command can be | |
279 nested as deep as the number of files that can be opened at one time (about | |
280 15). The ':source!' command can be nested up to 15 levels deep. | |
281 | |
282 You can use the "<sfile>" string (literally, this is not a special key) inside | |
283 of the sourced file, in places where a file name is expected. It will be | |
284 replaced by the file name of the sourced file. For example, if you have a | |
285 "other.vimrc" file in the same directory as your ".vimrc" file, you can source | |
286 it from your ".vimrc" file with this command: > | |
287 :source <sfile>:h/other.vimrc | |
288 | |
289 In script files terminal-dependent key codes are represented by | |
290 terminal-independent two character codes. This means that they can be used | |
291 in the same way on different kinds of terminals. The first character of a | |
292 key code is 0x80 or 128, shown on the screen as "~@". The second one can be | |
293 found in the list |key-notation|. Any of these codes can also be entered | |
294 with CTRL-V followed by the three digit decimal code. This does NOT work for | |
295 the <t_xx> termcap codes, these can only be used in mappings. | |
296 | |
297 *:source_crnl* *W15* | |
298 MS-DOS, Win32 and OS/2: Files that are read with ":source" normally have | |
299 <CR><NL> <EOL>s. These always work. If you are using a file with <NL> <EOL>s | |
300 (for example, a file made on Unix), this will be recognized if 'fileformats' | |
301 is not empty and the first line does not end in a <CR>. This fails if the | |
302 first line has something like ":map <F1> :help^M", where "^M" is a <CR>. If | |
303 the first line ends in a <CR>, but following ones don't, you will get an error | |
304 message, because the <CR> from the first lines will be lost. | |
305 | |
333 | 306 Mac Classic: Files that are read with ":source" normally have <CR> <EOL>s. |
7 | 307 These always work. If you are using a file with <NL> <EOL>s (for example, a |
308 file made on Unix), this will be recognized if 'fileformats' is not empty and | |
309 the first line does not end in a <CR>. Be careful not to use a file with <NL> | |
310 linebreaks which has a <CR> in first line. | |
311 | |
312 On other systems, Vim expects ":source"ed files to end in a <NL>. These | |
313 always work. If you are using a file with <CR><NL> <EOL>s (for example, a | |
314 file made on MS-DOS), all lines will have a trailing <CR>. This may cause | |
315 problems for some commands (e.g., mappings). There is no automatic <EOL> | |
316 detection, because it's common to start with a line that defines a mapping | |
317 that ends in a <CR>, which will confuse the automaton. | |
318 | |
319 *line-continuation* | |
320 Long lines in a ":source"d Ex command script file can be split by inserting | |
321 a line continuation symbol "\" (backslash) at the start of the next line. | |
322 There can be white space before the backslash, which is ignored. | |
323 | |
324 Example: the lines > | |
325 :set comments=sr:/*,mb:*,el:*/, | |
326 \://, | |
327 \b:#, | |
328 \:%, | |
329 \n:>, | |
330 \fb:- | |
331 are interpreted as if they were given in one line: | |
332 :set comments=sr:/*,mb:*,el:*/,://,b:#,:%,n:>,fb:- | |
333 | |
334 All leading whitespace characters in the line before a backslash are ignored. | |
335 Note however that trailing whitespace in the line before it cannot be | |
336 inserted freely; it depends on the position where a command is split up | |
337 whether additional whitespace is allowed or not. | |
338 | |
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339 When a space is required it's best to put it right after the backslash. A |
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340 space at the end of a line is hard to see and may be accidentally deleted. > |
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341 :syn match Comment |
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342 \ "very long regexp" |
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343 \ keepend |
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344 |
7 | 345 There is a problem with the ":append" and ":insert" commands: > |
346 :1append | |
347 \asdf | |
348 . | |
349 The backslash is seen as a line-continuation symbol, thus this results in the | |
350 command: > | |
351 :1appendasdf | |
352 . | |
353 To avoid this, add the 'C' flag to the 'cpoptions' option: > | |
354 :set cpo+=C | |
355 :1append | |
356 \asdf | |
357 . | |
358 :set cpo-=C | |
359 | |
360 Note that when the commands are inside a function, you need to add the 'C' | |
361 flag when defining the function, it is not relevant when executing it. > | |
362 :set cpo+=C | |
363 :function Foo() | |
364 :1append | |
365 \asdf | |
366 . | |
367 :endfunction | |
368 :set cpo-=C | |
369 | |
370 Rationale: | |
371 Most programs work with a trailing backslash to indicate line | |
372 continuation. Using this in Vim would cause incompatibility with Vi. | |
373 For example for this Vi mapping: > | |
374 :map xx asdf\ | |
375 < Therefore the unusual leading backslash is used. | |
376 | |
377 ============================================================================== | |
378 5. Debugging scripts *debug-scripts* | |
379 | |
380 Besides the obvious messages that you can add to your scripts to find out what | |
381 they are doing, Vim offers a debug mode. This allows you to step through a | |
382 sourced file or user function and set breakpoints. | |
383 | |
384 NOTE: The debugging mode is far from perfect. Debugging will have side | |
385 effects on how Vim works. You cannot use it to debug everything. For | |
386 example, the display is messed up by the debugging messages. | |
387 {Vi does not have a debug mode} | |
388 | |
389 An alternative to debug mode is setting the 'verbose' option. With a bigger | |
390 number it will give more verbose messages about what Vim is doing. | |
391 | |
392 | |
393 STARTING DEBUG MODE *debug-mode* | |
394 | |
395 To enter debugging mode use one of these methods: | |
396 1. Start Vim with the |-D| argument: > | |
397 vim -D file.txt | |
398 < Debugging will start as soon as the first vimrc file is sourced. This is | |
399 useful to find out what is happening when Vim is starting up. A side | |
400 effect is that Vim will switch the terminal mode before initialisations | |
401 have finished, with unpredictable results. | |
402 For a GUI-only version (Windows, Macintosh) the debugging will start as | |
403 soon as the GUI window has been opened. To make this happen early, add a | |
404 ":gui" command in the vimrc file. | |
405 *:debug* | |
406 2. Run a command with ":debug" prepended. Debugging will only be done while | |
407 this command executes. Useful for debugging a specific script or user | |
408 function. And for scripts and functions used by autocommands. Example: > | |
409 :debug edit test.txt.gz | |
410 | |
411 3. Set a breakpoint in a sourced file or user function. You could do this in | |
412 the command line: > | |
413 vim -c "breakadd file */explorer.vim" . | |
414 < This will run Vim and stop in the first line of the "explorer.vim" script. | |
415 Breakpoints can also be set while in debugging mode. | |
416 | |
417 In debugging mode every executed command is displayed before it is executed. | |
418 Comment lines, empty lines and lines that are not executed are skipped. When | |
419 a line contains two commands, separated by "|", each command will be displayed | |
420 separately. | |
421 | |
422 | |
423 DEBUG MODE | |
424 | |
425 Once in debugging mode, the usual Ex commands can be used. For example, to | |
426 inspect the value of a variable: > | |
427 echo idx | |
428 When inside a user function, this will print the value of the local variable | |
429 "idx". Prepend "g:" to get the value of a global variable: > | |
430 echo g:idx | |
431 All commands are executed in the context of the current function or script. | |
432 You can also set options, for example setting or resetting 'verbose' will show | |
433 what happens, but you might want to set it just before executing the lines you | |
434 are interested in: > | |
435 :set verbose=20 | |
436 | |
437 Commands that require updating the screen should be avoided, because their | |
438 effect won't be noticed until after leaving debug mode. For example: > | |
439 :help | |
440 won't be very helpful. | |
441 | |
442 There is a separate command-line history for debug mode. | |
443 | |
444 The line number for a function line is relative to the start of the function. | |
445 If you have trouble figuring out where you are, edit the file that defines | |
446 the function in another Vim, search for the start of the function and do | |
447 "99j". Replace "99" with the line number. | |
448 | |
449 Additionally, these commands can be used: | |
450 *>cont* | |
451 cont Continue execution until the next breakpoint is hit. | |
452 *>quit* | |
453 quit Abort execution. This is like using CTRL-C, some | |
454 things might still be executed, doesn't abort | |
455 everything. Still stops at the next breakpoint. | |
456 *>next* | |
457 next Execute the command and come back to debug mode when | |
458 it's finished. This steps over user function calls | |
459 and sourced files. | |
460 *>step* | |
461 step Execute the command and come back to debug mode for | |
462 the next command. This steps into called user | |
463 functions and sourced files. | |
464 *>interrupt* | |
465 interrupt This is like using CTRL-C, but unlike ">quit" comes | |
466 back to debug mode for the next command that is | |
467 executed. Useful for testing |:finally| and |:catch| | |
468 on interrupt exceptions. | |
469 *>finish* | |
470 finish Finish the current script or user function and come | |
471 back to debug mode for the command after the one that | |
472 sourced or called it. | |
473 | |
474 About the additional commands in debug mode: | |
475 - There is no command-line completion for them, you get the completion for the | |
476 normal Ex commands only. | |
477 - You can shorten them, up to a single character: "c", "n", "s" and "f". | |
478 - Hitting <CR> will repeat the previous one. When doing another command, this | |
479 is reset (because it's not clear what you want to repeat). | |
480 - When you want to use the Ex command with the same name, prepend a colon: | |
481 ":cont", ":next", ":finish" (or shorter). | |
482 | |
483 | |
484 DEFINING BREAKPOINTS | |
485 *:breaka* *:breakadd* | |
486 :breaka[dd] func [lnum] {name} | |
487 Set a breakpoint in a function. Example: > | |
488 :breakadd func Explore | |
489 < Doesn't check for a valid function name, thus the breakpoint | |
490 can be set before the function is defined. | |
491 | |
492 :breaka[dd] file [lnum] {name} | |
493 Set a breakpoint in a sourced file. Example: > | |
494 :breakadd file 43 .vimrc | |
495 | |
10 | 496 :breaka[dd] here |
497 Set a breakpoint in the current line of the current file. | |
498 Like doing: > | |
499 :breakadd file <cursor-line> <current-file> | |
500 < Note that this only works for commands that are executed when | |
501 sourcing the file, not for a function defined in that file. | |
502 | |
7 | 503 The [lnum] is the line number of the breakpoint. Vim will stop at or after |
504 this line. When omitted line 1 is used. | |
505 | |
170 | 506 *:debug-name* |
7 | 507 {name} is a pattern that is matched with the file or function name. The |
508 pattern is like what is used for autocommands. There must be a full match (as | |
509 if the pattern starts with "^" and ends in "$"). A "*" matches any sequence | |
510 of characters. 'ignorecase' is not used, but "\c" can be used in the pattern | |
511 to ignore case |/\c|. Don't include the () for the function name! | |
512 | |
11 | 513 The match for sourced scripts is done against the full file name. If no path |
514 is specified the current directory is used. Examples: > | |
515 breakadd file explorer.vim | |
516 matches "explorer.vim" in the current directory. > | |
7 | 517 breakadd file *explorer.vim |
11 | 518 matches ".../plugin/explorer.vim", ".../plugin/iexplorer.vim", etc. > |
7 | 519 breakadd file */explorer.vim |
11 | 520 matches ".../plugin/explorer.vim" and "explorer.vim" in any other directory. |
7 | 521 |
522 The match for functions is done against the name as it's shown in the output | |
523 of ":function". For local functions this means that something like "<SNR>99_" | |
524 is prepended. | |
525 | |
148 | 526 Note that functions are first loaded and later executed. When they are loaded |
527 the "file" breakpoints are checked, when they are executed the "func" | |
528 breakpoints. | |
529 | |
7 | 530 |
531 DELETING BREAKPOINTS | |
532 *:breakd* *:breakdel* *E161* | |
533 :breakd[el] {nr} | |
534 Delete breakpoint {nr}. Use |:breaklist| to see the number of | |
535 each breakpoint. | |
536 | |
359 | 537 :breakd[el] * |
538 Delete all breakpoints. | |
539 | |
7 | 540 :breakd[el] func [lnum] {name} |
541 Delete a breakpoint in a function. | |
542 | |
543 :breakd[el] file [lnum] {name} | |
544 Delete a breakpoint in a sourced file. | |
545 | |
10 | 546 :breakd[el] here |
547 Delete a breakpoint at the current line of the current file. | |
548 | |
7 | 549 When [lnum] is omitted, the first breakpoint in the function or file is |
550 deleted. | |
551 The {name} must be exactly the same as what was typed for the ":breakadd" | |
552 command. "explorer", "*explorer.vim" and "*explorer*" are different. | |
553 | |
554 | |
555 LISTING BREAKPOINTS | |
556 *:breakl* *:breaklist* | |
557 :breakl[ist] | |
558 List all breakpoints. | |
559 | |
560 | |
561 OBSCURE | |
562 | |
563 *:debugg* *:debuggreedy* | |
564 :debugg[reedy] | |
565 Read debug mode commands from the normal input stream, instead | |
566 of getting them directly from the user. Only useful for test | |
567 scripts. Example: > | |
568 echo 'q^Mq' | vim -e -s -c debuggreedy -c 'breakadd file script.vim' -S script.vim | |
569 | |
570 :0debugg[reedy] | |
571 Undo ":debuggreedy": get debug mode commands directly from the | |
572 user, don't use typeahead for debug commands. | |
573 | |
170 | 574 ============================================================================== |
575 6. Profiling *profile* *profiling* | |
576 | |
2283
7e1bd501306d
Mainly documentation updates.
Bram Moolenaar <bram@vim.org>
parents:
2207
diff
changeset
|
577 Profiling means that Vim measures the time that is spent on executing |
170 | 578 functions and/or scripts. The |+profile| feature is required for this. |
579 It is only included when Vim was compiled with "huge" features. | |
580 {Vi does not have profiling} | |
581 | |
794 | 582 You can also use the |reltime()| function to measure time. This only requires |
583 the |+reltime| feature, which is present more often. | |
584 | |
170 | 585 :prof[ile] start {fname} *:prof* *:profile* *E750* |
586 Start profiling, write the output in {fname} upon exit. | |
790 | 587 If {fname} already exists it will be silently overwritten. |
170 | 588 The variable |v:profiling| is set to one. |
589 | |
790 | 590 :prof[ile] pause |
591 Don't profile until the following ":profile continue". Can be | |
592 used when doing something that should not be counted (e.g., an | |
593 external command). Does not nest. | |
594 | |
595 :prof[ile] continue | |
596 Continue profiling after ":profile pause". | |
597 | |
170 | 598 :prof[ile] func {pattern} |
599 Profile function that matches the pattern {pattern}. | |
600 See |:debug-name| for how {pattern} is used. | |
601 | |
602 :prof[ile][!] file {pattern} | |
603 Profile script file that matches the pattern {pattern}. | |
604 See |:debug-name| for how {pattern} is used. | |
605 This only profiles the script itself, not the functions | |
606 defined in it. | |
607 When the [!] is added then all functions defined in the script | |
177 | 608 will also be profiled. But only if the script is loaded after |
609 this command. | |
170 | 610 |
611 | |
364 | 612 :profd[el] ... *:profd* *:profdel* |
613 Stop profiling for the arguments specified. See |:breakdel| | |
614 for the arguments. | |
615 | |
616 | |
170 | 617 You must always start with a ":profile start fname" command. The resulting |
618 file is written when Vim exits. Here is an example of the output, with line | |
619 numbers prepended for the explanation: | |
620 | |
621 1 FUNCTION Test2() ~ | |
622 2 Called 1 time ~ | |
623 3 Total time: 0.155251 ~ | |
624 4 Self time: 0.002006 ~ | |
625 5 ~ | |
626 6 count total (s) self (s) ~ | |
856 | 627 7 9 0.000096 for i in range(8) ~ |
628 8 8 0.153655 0.000410 call Test3() ~ | |
629 9 8 0.000070 endfor ~ | |
630 10 " Ask a question ~ | |
631 11 1 0.001341 echo input("give me an answer: ") ~ | |
170 | 632 |
633 The header (lines 1-4) gives the time for the whole function. The "Total" | |
634 time is the time passed while the function was executing. The "Self" time is | |
635 the "Total" time reduced by time spent in: | |
636 - other user defined functions | |
637 - sourced scripts | |
638 - executed autocommands | |
639 - external (shell) commands | |
640 | |
641 Lines 7-11 show the time spent in each executed line. Lines that are not | |
642 executed do not count. Thus a comment line is never counted. | |
643 | |
644 The Count column shows how many times a line was executed. Note that the | |
645 "for" command in line 7 is executed one more time as the following lines. | |
646 That is because the line is also executed to detect the end of the loop. | |
647 | |
648 The time Vim spends waiting for user input isn't counted at all. Thus how | |
649 long you take to respond to the input() prompt is irrelevant. | |
650 | |
651 Profiling should give a good indication of where time is spent, but keep in | |
652 mind there are various things that may clobber the results: | |
653 | |
654 - The accuracy of the time measured depends on the gettimeofday() system | |
655 function. It may only be as accurate as 1/100 second, even though the times | |
656 are displayed in micro seconds. | |
657 | |
658 - Real elapsed time is measured, if other processes are busy they may cause | |
659 delays at unpredictable moments. You may want to run the profiling several | |
660 times and use the lowest results. | |
661 | |
662 - If you have several commands in one line you only get one time. Split the | |
663 line to see the time for the individual commands. | |
664 | |
665 - The time of the lines added up is mostly less than the time of the whole | |
666 function. There is some overhead in between. | |
667 | |
668 - Functions that are deleted before Vim exits will not produce profiling | |
669 information. You can check the |v:profiling| variable if needed: > | |
856 | 670 :if !v:profiling |
170 | 671 : delfunc MyFunc |
672 :endif | |
673 < | |
177 | 674 - Profiling may give weird results on multi-processor systems, when sleep |
675 mode kicks in or the processor frequency is reduced to save power. | |
170 | 676 |
1125 | 677 - The "self" time is wrong when a function is used recursively. |
678 | |
679 | |
7 | 680 vim:tw=78:ts=8:ft=help:norl: |