Mercurial > vim
annotate runtime/doc/tips.txt @ 23911:30e3a7a33b66 v8.2.2498
patch 8.2.2498: no test for what 8.2.2494 fixes
Commit: https://github.com/vim/vim/commit/5affc034680a95eabfbfca763bedf86ae0a79c44
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Feb 11 18:36:30 2021 +0100
patch 8.2.2498: no test for what 8.2.2494 fixes
Problem: No test for what 8.2.2494 fixes.
Solution: Add a simple change to test the fix. (closes https://github.com/vim/vim/issues/7818)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 11 Feb 2021 18:45:03 +0100 |
| parents | 15fa3923cc49 |
| children | babd9f1dbe12 |
| rev | line source |
|---|---|
| 23466 | 1 *tips.txt* For Vim version 8.2. Last change: 2020 Dec 29 |
| 7 | 2 |
| 3 | |
| 4 VIM REFERENCE MANUAL by Bram Moolenaar | |
| 5 | |
| 6 | |
| 7 Tips and ideas for using Vim *tips* | |
| 8 | |
|
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9 These are just a few that we thought would be helpful for many users. |
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10 You can find many more tips on the wiki. The URL can be found on |
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11 http://www.vim.org |
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12 |
| 7 | 13 Don't forget to browse the user manual, it also contains lots of useful tips |
| 14 |usr_toc.txt|. | |
| 15 | |
| 16 Editing C programs |C-editing| | |
| 17 Finding where identifiers are used |ident-search| | |
| 18 Switching screens in an xterm |xterm-screens| | |
| 19 Scrolling in Insert mode |scroll-insert| | |
| 20 Smooth scrolling |scroll-smooth| | |
| 21 Correcting common typing mistakes |type-mistakes| | |
| 22 Counting words, lines, etc. |count-items| | |
| 23 Restoring the cursor position |restore-position| | |
| 24 Renaming files |rename-files| | |
|
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25 Change a name in multiple files |change-name| |
| 7 | 26 Speeding up external commands |speed-up| |
| 27 Useful mappings |useful-mappings| | |
| 28 Compressing the help files |gzip-helpfile| | |
|
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29 Executing shell commands in a window |shell-window| |
| 7 | 30 Hex editing |hex-editing| |
| 31 Using <> notation in autocommands |autocmd-<>| | |
| 667 | 32 Highlighting matching parens |match-parens| |
| 23466 | 33 Opening help in the current window |help-curwin| |
| 7 | 34 |
| 35 ============================================================================== | |
| 36 Editing C programs *C-editing* | |
| 37 | |
| 38 There are quite a few features in Vim to help you edit C program files. Here | |
| 39 is an overview with tags to jump to: | |
| 40 | |
| 41 |usr_29.txt| Moving through programs chapter in the user manual. | |
| 42 |usr_30.txt| Editing programs chapter in the user manual. | |
| 43 |C-indenting| Automatically set the indent of a line while typing | |
| 44 text. | |
| 45 |=| Re-indent a few lines. | |
| 46 |format-comments| Format comments. | |
| 47 | |
| 48 |:checkpath| Show all recursively included files. | |
| 49 |[i| Search for identifier under cursor in current and | |
| 50 included files. | |
| 51 |[_CTRL-I| Jump to match for "[i" | |
| 52 |[I| List all lines in current and included files where | |
| 53 identifier under the cursor matches. | |
| 54 |[d| Search for define under cursor in current and included | |
| 55 files. | |
| 56 | |
| 57 |CTRL-]| Jump to tag under cursor (e.g., definition of a | |
| 58 function). | |
| 59 |CTRL-T| Jump back to before a CTRL-] command. | |
| 60 |:tselect| Select one tag out of a list of matching tags. | |
| 61 | |
| 62 |gd| Go to Declaration of local variable under cursor. | |
| 63 |gD| Go to Declaration of global variable under cursor. | |
| 64 | |
| 65 |gf| Go to file name under the cursor. | |
| 66 | |
| 67 |%| Go to matching (), {}, [], /* */, #if, #else, #endif. | |
| 68 |[/| Go to previous start of comment. | |
| 69 |]/| Go to next end of comment. | |
| 70 |[#| Go back to unclosed #if, #ifdef, or #else. | |
| 71 |]#| Go forward to unclosed #else or #endif. | |
| 72 |[(| Go back to unclosed '(' | |
| 73 |])| Go forward to unclosed ')' | |
| 74 |[{| Go back to unclosed '{' | |
| 75 |]}| Go forward to unclosed '}' | |
| 76 | |
| 77 |v_ab| Select "a block" from "[(" to "])", including braces | |
| 78 |v_ib| Select "inner block" from "[(" to "])" | |
| 79 |v_aB| Select "a block" from "[{" to "]}", including brackets | |
| 80 |v_iB| Select "inner block" from "[{" to "]}" | |
| 81 | |
| 82 ============================================================================== | |
| 83 Finding where identifiers are used *ident-search* | |
| 84 | |
| 85 You probably already know that |tags| can be used to jump to the place where a | |
| 86 function or variable is defined. But sometimes you wish you could jump to all | |
| 87 the places where a function or variable is being used. This is possible in | |
| 88 two ways: | |
| 89 1. Using the |:grep| command. This should work on most Unix systems, | |
| 90 but can be slow (it reads all files) and only searches in one directory. | |
| 91 2. Using ID utils. This is fast and works in multiple directories. It uses a | |
| 92 database to store locations. You will need some additional programs for | |
| 93 this to work. And you need to keep the database up to date. | |
| 94 | |
| 95 Using the GNU id-tools: | |
| 96 | |
| 97 What you need: | |
| 98 - The GNU id-tools installed (mkid is needed to create ID and lid is needed to | |
| 99 use the macros). | |
| 100 - An identifier database file called "ID" in the current directory. You can | |
| 101 create it with the shell command "mkid file1 file2 ..". | |
| 102 | |
| 103 Put this in your .vimrc: > | |
| 104 map _u :call ID_search()<Bar>execute "/\\<" . g:word . "\\>"<CR> | |
| 105 map _n :n<Bar>execute "/\\<" . g:word . "\\>"<CR> | |
| 106 | |
| 107 function! ID_search() | |
| 108 let g:word = expand("<cword>") | |
| 109 let x = system("lid --key=none ". g:word) | |
| 110 let x = substitute(x, "\n", " ", "g") | |
| 111 execute "next " . x | |
| 112 endfun | |
| 113 | |
| 114 To use it, place the cursor on a word, type "_u" and vim will load the file | |
| 115 that contains the word. Search for the next occurrence of the word in the | |
| 116 same file with "n". Go to the next file with "_n". | |
| 117 | |
| 118 This has been tested with id-utils-3.2 (which is the name of the id-tools | |
| 119 archive file on your closest gnu-ftp-mirror). | |
| 120 | |
| 121 [the idea for this comes from Andreas Kutschera] | |
| 122 | |
| 123 ============================================================================== | |
| 124 Switching screens in an xterm *xterm-screens* *xterm-save-screen* | |
| 125 | |
| 126 (From comp.editors, by Juergen Weigert, in reply to a question) | |
| 127 | |
| 128 :> Another question is that after exiting vim, the screen is left as it | |
| 129 :> was, i.e. the contents of the file I was viewing (editing) was left on | |
| 130 :> the screen. The output from my previous like "ls" were lost, | |
| 131 :> ie. no longer in the scrolling buffer. I know that there is a way to | |
| 132 :> restore the screen after exiting vim or other vi like editors, | |
| 133 :> I just don't know how. Helps are appreciated. Thanks. | |
| 134 : | |
| 135 :I imagine someone else can answer this. I assume though that vim and vi do | |
| 136 :the same thing as each other for a given xterm setup. | |
| 137 | |
| 138 They not necessarily do the same thing, as this may be a termcap vs. | |
| 236 | 139 terminfo problem. You should be aware that there are two databases for |
| 7 | 140 describing attributes of a particular type of terminal: termcap and |
| 236 | 141 terminfo. This can cause differences when the entries differ AND when of |
| 7 | 142 the programs in question one uses terminfo and the other uses termcap |
| 143 (also see |+terminfo|). | |
| 144 | |
| 145 In your particular problem, you are looking for the control sequences | |
| 236 | 146 ^[[?47h and ^[[?47l. These switch between xterms alternate and main screen |
| 147 buffer. As a quick workaround a command sequence like > | |
| 7 | 148 echo -n "^[[?47h"; vim ... ; echo -n "^[[?47l" |
| 236 | 149 may do what you want. (My notation ^[ means the ESC character, further down |
| 7 | 150 you'll see that the databases use \E instead). |
| 151 | |
| 152 On startup, vim echoes the value of the termcap variable ti (terminfo: | |
| 236 | 153 smcup) to the terminal. When exiting, it echoes te (terminfo: rmcup). Thus |
| 7 | 154 these two variables are the correct place where the above mentioned control |
| 155 sequences should go. | |
| 156 | |
| 157 Compare your xterm termcap entry (found in /etc/termcap) with your xterm | |
| 1121 | 158 terminfo entry (retrieved with "infocmp -C xterm"). Both should contain |
| 159 entries similar to: > | |
| 7 | 160 :te=\E[2J\E[?47l\E8:ti=\E7\E[?47h: |
| 161 | |
| 162 PS: If you find any difference, someone (your sysadmin?) should better check | |
| 163 the complete termcap and terminfo database for consistency. | |
| 164 | |
| 165 NOTE 1: If you recompile Vim with FEAT_XTERM_SAVE defined in feature.h, the | |
| 166 builtin xterm will include the mentioned "te" and "ti" entries. | |
| 167 | |
| 168 NOTE 2: If you want to disable the screen switching, and you don't want to | |
| 169 change your termcap, you can add these lines to your .vimrc: > | |
| 170 :set t_ti= t_te= | |
| 171 | |
| 172 ============================================================================== | |
| 173 Scrolling in Insert mode *scroll-insert* | |
| 174 | |
| 175 If you are in insert mode and you want to see something that is just off the | |
| 176 screen, you can use CTRL-X CTRL-E and CTRL-X CTRL-Y to scroll the screen. | |
| 177 |i_CTRL-X_CTRL-E| | |
| 178 | |
| 179 To make this easier, you could use these mappings: > | |
| 180 :inoremap <C-E> <C-X><C-E> | |
| 181 :inoremap <C-Y> <C-X><C-Y> | |
| 182 (Type this literally, make sure the '<' flag is not in 'cpoptions'). | |
| 183 You then lose the ability to copy text from the line above/below the cursor | |
| 184 |i_CTRL-E|. | |
| 185 | |
| 186 Also consider setting 'scrolloff' to a larger value, so that you can always see | |
| 187 some context around the cursor. If 'scrolloff' is bigger than half the window | |
| 188 height, the cursor will always be in the middle and the text is scrolled when | |
| 189 the cursor is moved up/down. | |
| 190 | |
| 191 ============================================================================== | |
| 192 Smooth scrolling *scroll-smooth* | |
| 193 | |
| 194 If you like the scrolling to go a bit smoother, you can use these mappings: > | |
| 195 :map <C-U> <C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y><C-Y> | |
| 196 :map <C-D> <C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E><C-E> | |
| 197 | |
| 198 (Type this literally, make sure the '<' flag is not in 'cpoptions'). | |
| 199 | |
| 200 ============================================================================== | |
| 201 Correcting common typing mistakes *type-mistakes* | |
| 202 | |
| 203 When there are a few words that you keep on typing in the wrong way, make | |
| 204 abbreviations that correct them. For example: > | |
| 205 :ab teh the | |
| 206 :ab fro for | |
| 207 | |
| 208 ============================================================================== | |
| 209 Counting words, lines, etc. *count-items* | |
| 210 | |
| 170 | 211 To count how often any pattern occurs in the current buffer use the substitute |
| 212 command and add the 'n' flag to avoid the substitution. The reported number | |
| 213 of substitutions is the number of items. Examples: > | |
| 7 | 214 |
| 170 | 215 :%s/./&/gn characters |
| 216 :%s/\i\+/&/gn words | |
| 217 :%s/^//n lines | |
| 218 :%s/the/&/gn "the" anywhere | |
| 219 :%s/\<the\>/&/gn "the" as a word | |
| 7 | 220 |
| 221 You might want to reset 'hlsearch' or do ":nohlsearch". | |
| 170 | 222 Add the 'e' flag if you don't want an error when there are no matches. |
| 7 | 223 |
| 170 | 224 An alternative is using |v_g_CTRL-G| in Visual mode. |
| 225 | |
| 226 If you want to find matches in multiple files use |:vimgrep|. | |
| 7 | 227 |
| 228 *count-bytes* | |
| 229 If you want to count bytes, you can use this: | |
| 230 | |
| 231 Visually select the characters (block is also possible) | |
| 232 Use "y" to yank the characters | |
| 233 Use the strlen() function: > | |
| 234 :echo strlen(@") | |
| 235 A line break is counted for one byte. | |
| 236 | |
| 237 ============================================================================== | |
| 238 Restoring the cursor position *restore-position* | |
| 239 | |
| 240 Sometimes you want to write a mapping that makes a change somewhere in the | |
| 241 file and restores the cursor position, without scrolling the text. For | |
| 242 example, to change the date mark in a file: > | |
| 243 :map <F2> msHmtgg/Last [cC]hange:\s*/e+1<CR>"_D"=strftime("%Y %b %d")<CR>p'tzt`s | |
| 244 | |
| 245 Breaking up saving the position: | |
| 246 ms store cursor position in the 's' mark | |
| 247 H go to the first line in the window | |
| 248 mt store this position in the 't' mark | |
| 249 | |
| 250 Breaking up restoring the position: | |
| 251 't go to the line previously at the top of the window | |
| 252 zt scroll to move this line to the top of the window | |
| 253 `s jump to the original position of the cursor | |
| 254 | |
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255 For something more advanced see |winsaveview()| and |winrestview()|. |
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256 |
| 7 | 257 ============================================================================== |
| 258 Renaming files *rename-files* | |
| 259 | |
| 260 Say I have a directory with the following files in them (directory picked at | |
| 261 random :-): | |
| 262 | |
| 263 buffer.c | |
| 264 charset.c | |
| 265 digraph.c | |
| 266 ... | |
| 267 | |
| 268 and I want to rename *.c *.bla. I'd do it like this: > | |
| 269 | |
| 270 $ vim | |
| 246 | 271 :r !ls *.c |
| 7 | 272 :%s/\(.*\).c/mv & \1.bla |
| 273 :w !sh | |
| 274 :q! | |
| 275 | |
| 276 ============================================================================== | |
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277 Change a name in multiple files *change-name* |
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278 |
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279 Example for using a script file to change a name in several files: |
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280 |
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281 Create a file "subs.vim" containing substitute commands and a :update |
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282 command: > |
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283 :%s/Jones/Smith/g |
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284 :%s/Allen/Peter/g |
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285 :update |
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286 < |
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287 Execute Vim on all files you want to change, and source the script for |
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288 each argument: > |
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289 |
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290 vim *.let |
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291 argdo source subs.vim |
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292 |
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293 See |:argdo|. |
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294 |
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295 ============================================================================== |
| 7 | 296 Speeding up external commands *speed-up* |
| 297 | |
| 298 In some situations, execution of an external command can be very slow. This | |
| 299 can also slow down wildcard expansion on Unix. Here are a few suggestions to | |
| 300 increase the speed. | |
| 301 | |
| 302 If your .cshrc (or other file, depending on the shell used) is very long, you | |
| 303 should separate it into a section for interactive use and a section for | |
| 304 non-interactive use (often called secondary shells). When you execute a | |
| 305 command from Vim like ":!ls", you do not need the interactive things (for | |
| 306 example, setting the prompt). Put the stuff that is not needed after these | |
| 307 lines: > | |
| 308 | |
| 309 if ($?prompt == 0) then | |
| 310 exit 0 | |
| 311 endif | |
| 312 | |
| 313 Another way is to include the "-f" flag in the 'shell' option, e.g.: > | |
| 314 | |
| 315 :set shell=csh\ -f | |
| 316 | |
| 317 (the backslash is needed to include the space in the option). | |
| 318 This will make csh completely skip the use of the .cshrc file. This may cause | |
| 319 some things to stop working though. | |
| 320 | |
| 321 ============================================================================== | |
| 322 Useful mappings *useful-mappings* | |
| 323 | |
| 324 Here are a few mappings that some people like to use. | |
| 325 | |
| 326 *map-backtick* > | |
| 327 :map ' ` | |
| 328 Make the single quote work like a backtick. Puts the cursor on the column of | |
| 329 a mark, instead of going to the first non-blank character in the line. | |
| 330 | |
| 331 *emacs-keys* | |
| 332 For Emacs-style editing on the command-line: > | |
| 333 " start of line | |
| 334 :cnoremap <C-A> <Home> | |
| 335 " back one character | |
| 336 :cnoremap <C-B> <Left> | |
| 337 " delete character under cursor | |
| 338 :cnoremap <C-D> <Del> | |
| 339 " end of line | |
| 340 :cnoremap <C-E> <End> | |
| 341 " forward one character | |
| 342 :cnoremap <C-F> <Right> | |
| 343 " recall newer command-line | |
| 344 :cnoremap <C-N> <Down> | |
| 345 " recall previous (older) command-line | |
| 346 :cnoremap <C-P> <Up> | |
| 347 " back one word | |
| 348 :cnoremap <Esc><C-B> <S-Left> | |
| 349 " forward one word | |
| 350 :cnoremap <Esc><C-F> <S-Right> | |
| 351 | |
| 352 NOTE: This requires that the '<' flag is excluded from 'cpoptions'. |<>| | |
| 353 | |
| 354 *format-bullet-list* | |
| 355 This mapping will format any bullet list. It requires that there is an empty | |
| 356 line above and below each list entry. The expression commands are used to | |
| 357 be able to give comments to the parts of the mapping. > | |
| 358 | |
| 359 :let m = ":map _f :set ai<CR>" " need 'autoindent' set | |
| 360 :let m = m . "{O<Esc>" " add empty line above item | |
| 361 :let m = m . "}{)^W" " move to text after bullet | |
| 362 :let m = m . "i <CR> <Esc>" " add space for indent | |
| 363 :let m = m . "gq}" " format text after the bullet | |
| 364 :let m = m . "{dd" " remove the empty line | |
| 365 :let m = m . "5lDJ" " put text after bullet | |
| 366 :execute m |" define the mapping | |
| 367 | |
| 368 (<> notation |<>|. Note that this is all typed literally. ^W is "^" "W", not | |
| 369 CTRL-W. You can copy/paste this into Vim if '<' is not included in | |
| 236 | 370 'cpoptions'.) |
| 7 | 371 |
| 372 Note that the last comment starts with |", because the ":execute" command | |
| 373 doesn't accept a comment directly. | |
| 374 | |
| 375 You also need to set 'textwidth' to a non-zero value, e.g., > | |
| 376 :set tw=70 | |
| 377 | |
| 378 A mapping that does about the same, but takes the indent for the list from the | |
| 379 first line (Note: this mapping is a single long line with a lot of spaces): > | |
| 380 :map _f :set ai<CR>}{a <Esc>WWmmkD`mi<CR><Esc>kkddpJgq}'mJO<Esc>j | |
| 381 < | |
| 382 *collapse* | |
| 383 These two mappings reduce a sequence of empty (;b) or blank (;n) lines into a | |
| 384 single line > | |
| 385 :map ;b GoZ<Esc>:g/^$/.,/./-j<CR>Gdd | |
| 386 :map ;n GoZ<Esc>:g/^[ <Tab>]*$/.,/[^ <Tab>]/-j<CR>Gdd | |
| 387 | |
| 388 ============================================================================== | |
| 389 Compressing the help files *gzip-helpfile* | |
| 390 | |
| 391 For those of you who are really short on disk space, you can compress the help | |
| 392 files and still be able to view them with Vim. This makes accessing the help | |
| 393 files a bit slower and requires the "gzip" program. | |
| 394 | |
| 395 (1) Compress all the help files: "gzip doc/*.txt". | |
| 396 | |
| 397 (2) Edit "doc/tags" and change the ".txt" to ".txt.gz": > | |
| 398 :%s=\(\t.*\.txt\)\t=\1.gz\t= | |
| 399 | |
| 400 (3) Add this line to your vimrc: > | |
| 401 set helpfile={dirname}/help.txt.gz | |
| 402 | |
| 403 Where {dirname} is the directory where the help files are. The |gzip| plugin | |
| 404 will take care of decompressing the files. | |
| 405 You must make sure that $VIMRUNTIME is set to where the other Vim files are, | |
| 406 when they are not in the same location as the compressed "doc" directory. See | |
| 407 |$VIMRUNTIME|. | |
| 408 | |
| 409 ============================================================================== | |
| 410 Executing shell commands in a window *shell-window* | |
| 411 | |
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412 See |terminal|. |
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413 |
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414 Another solution is splitting your terminal screen or display window with the |
| 7 | 415 "splitvt" program. You can probably find it on some ftp server. The person |
| 416 that knows more about this is Sam Lantinga <slouken@cs.ucdavis.edu>. | |
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417 |
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418 Another alternative is the "window" command, found on BSD Unix systems, which |
| 7 | 419 supports multiple overlapped windows. Or the "screen" program, found at |
| 420 www.uni-erlangen.de, which supports a stack of windows. | |
| 421 | |
| 422 ============================================================================== | |
| 423 Hex editing *hex-editing* *using-xxd* | |
| 424 | |
| 425 See section |23.4| of the user manual. | |
| 426 | |
| 427 If one has a particular extension that one uses for binary files (such as exe, | |
| 428 bin, etc), you may find it helpful to automate the process with the following | |
| 429 bit of autocmds for your <.vimrc>. Change that "*.bin" to whatever | |
| 430 comma-separated list of extension(s) you find yourself wanting to edit: > | |
| 431 | |
| 432 " vim -b : edit binary using xxd-format! | |
| 433 augroup Binary | |
| 434 au! | |
| 435 au BufReadPre *.bin let &bin=1 | |
| 436 au BufReadPost *.bin if &bin | %!xxd | |
| 437 au BufReadPost *.bin set ft=xxd | endif | |
| 438 au BufWritePre *.bin if &bin | %!xxd -r | |
| 439 au BufWritePre *.bin endif | |
| 440 au BufWritePost *.bin if &bin | %!xxd | |
| 441 au BufWritePost *.bin set nomod | endif | |
| 442 augroup END | |
| 443 | |
| 444 ============================================================================== | |
| 445 Using <> notation in autocommands *autocmd-<>* | |
| 446 | |
| 447 The <> notation is not recognized in the argument of an :autocmd. To avoid | |
| 448 having to use special characters, you could use a self-destroying mapping to | |
| 449 get the <> notation and then call the mapping from the autocmd. Example: | |
| 450 | |
| 451 *map-self-destroy* > | |
| 452 " This is for automatically adding the name of the file to the menu list. | |
| 453 " It uses a self-destroying mapping! | |
| 454 " 1. use a line in the buffer to convert the 'dots' in the file name to \. | |
| 455 " 2. store that in register '"' | |
| 456 " 3. add that name to the Buffers menu list | |
| 457 " WARNING: this does have some side effects, like overwriting the | |
| 458 " current register contents and removing any mapping for the "i" command. | |
| 459 " | |
| 460 autocmd BufNewFile,BufReadPre * nmap i :nunmap i<CR>O<C-R>%<Esc>:.g/\./s/\./\\./g<CR>0"9y$u:menu Buffers.<C-R>9 :buffer <C-R>%<C-V><CR><CR> | |
| 461 autocmd BufNewFile,BufReadPre * normal i | |
| 462 | |
| 463 Another method, perhaps better, is to use the ":execute" command. In the | |
| 464 string you can use the <> notation by preceding it with a backslash. Don't | |
| 465 forget to double the number of existing backslashes and put a backslash before | |
| 466 '"'. | |
| 467 > | |
| 468 autocmd BufNewFile,BufReadPre * exe "normal O\<C-R>%\<Esc>:.g/\\./s/\\./\\\\./g\<CR>0\"9y$u:menu Buffers.\<C-R>9 :buffer \<C-R>%\<C-V>\<CR>\<CR>" | |
| 469 | |
| 470 For a real buffer menu, user functions should be used (see |:function|), but | |
| 471 then the <> notation isn't used, which defeats using it as an example here. | |
| 472 | |
| 667 | 473 ============================================================================== |
| 474 Highlighting matching parens *match-parens* | |
| 475 | |
| 476 This example shows the use of a few advanced tricks: | |
| 477 - using the |CursorMoved| autocommand event | |
| 478 - using |searchpairpos()| to find a matching paren | |
| 674 | 479 - using |synID()| to detect whether the cursor is in a string or comment |
| 667 | 480 - using |:match| to highlight something |
| 481 - using a |pattern| to match a specific position in the file. | |
| 482 | |
| 483 This should be put in a Vim script file, since it uses script-local variables. | |
| 674 | 484 It skips matches in strings or comments, unless the cursor started in string |
| 485 or comment. This requires syntax highlighting. | |
| 699 | 486 |
| 487 A slightly more advanced version is used in the |matchparen| plugin. | |
| 667 | 488 > |
| 489 let s:paren_hl_on = 0 | |
| 490 function s:Highlight_Matching_Paren() | |
| 491 if s:paren_hl_on | |
| 492 match none | |
| 493 let s:paren_hl_on = 0 | |
| 494 endif | |
| 495 | |
| 496 let c_lnum = line('.') | |
| 497 let c_col = col('.') | |
| 498 | |
| 499 let c = getline(c_lnum)[c_col - 1] | |
| 500 let plist = split(&matchpairs, ':\|,') | |
| 501 let i = index(plist, c) | |
| 502 if i < 0 | |
| 503 return | |
| 504 endif | |
| 505 if i % 2 == 0 | |
| 506 let s_flags = 'nW' | |
| 507 let c2 = plist[i + 1] | |
| 508 else | |
| 509 let s_flags = 'nbW' | |
| 510 let c2 = c | |
| 511 let c = plist[i - 1] | |
| 512 endif | |
| 513 if c == '[' | |
| 514 let c = '\[' | |
| 515 let c2 = '\]' | |
| 516 endif | |
| 674 | 517 let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' . |
| 856 | 518 \ '=~? "string\\|comment"' |
| 519 execute 'if' s_skip '| let s_skip = 0 | endif' | |
| 667 | 520 |
| 674 | 521 let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip) |
| 667 | 522 |
| 523 if m_lnum > 0 && m_lnum >= line('w0') && m_lnum <= line('w$') | |
| 524 exe 'match Search /\(\%' . c_lnum . 'l\%' . c_col . | |
| 525 \ 'c\)\|\(\%' . m_lnum . 'l\%' . m_col . 'c\)/' | |
| 526 let s:paren_hl_on = 1 | |
| 527 endif | |
| 528 endfunction | |
| 529 | |
| 671 | 530 autocmd CursorMoved,CursorMovedI * call s:Highlight_Matching_Paren() |
| 667 | 531 autocmd InsertEnter * match none |
| 532 < | |
| 533 | |
| 23466 | 534 ============================================================================== |
| 535 Opening help in the current window *help-curwin* | |
| 536 | |
| 537 By default, help is displayed in a split window. If you prefer it opens in | |
| 538 the current window, try this custom `:HelpCurwin` command: | |
| 539 > | |
| 540 command -bar -nargs=? -complete=help HelpCurwin execute s:HelpCurwin(<q-args>) | |
| 541 let s:did_open_help = v:false | |
| 542 | |
| 543 function s:HelpCurwin(subject) abort | |
| 544 let mods = 'silent noautocmd keepalt' | |
| 545 if !s:did_open_help | |
| 546 execute mods .. ' help' | |
| 547 execute mods .. ' helpclose' | |
| 548 let s:did_open_help = v:true | |
| 549 endif | |
| 550 if !getcompletion(a:subject, 'help')->empty() | |
| 551 execute mods .. ' edit ' .. &helpfile | |
| 552 endif | |
| 553 return 'help ' .. a:subject | |
| 554 endfunction | |
| 555 < | |
| 556 | |
| 557 | |
| 14421 | 558 vim:tw=78:ts=8:noet:ft=help:norl: |