Questions tagged [functions]
Question about the use of functions in Vimscript defined in the `.vimrc` or a script file.
284
questions
3
votes
1
answer
564
views
How do you undefine existing functions and key maps?
I am looking at a scenario where in order to keep track of changes to my setup, rather than delete functions and keymaps defined in vimrc or other plugin I add commands which disable those functions ...
- 907
3
votes
2
answers
325
views
Reliably saving and restoring registers across a function call [duplicate]
When writing functions to use in mappings and user-defined commands (for plug-ins), it's often convenient to use a Normal-mode command to yank or delete buffer contents. In those cases, it's also nice ...
- 28.8k
3
votes
1
answer
681
views
How to organize autoload functions?
I'd like to put all my custom functions into autoload folder, but I have functions with the same name. How should I organize them?
- 187
3
votes
1
answer
138
views
Use motion in normal mapping calling a function
I have this function which displays line numbers. I want it to be called in different ways:
from a command, specifying the lines as arguments
with a visual selection, printing the first and last line ...
- 16k
3
votes
1
answer
252
views
How can I rename a command but still use the original command?
I have the following Vim code:
function! TabClose(...)
if a:1 == ""
tabonly
elseif a:1 == "left"
Tabops Close Left
elseif a:1 == "right"
...
- 261
3
votes
1
answer
373
views
How can I call function in visual mode
I want a function to change underline word to little camel for one line.
When I use <shift+v>:s/_\(\w\)/\u\1/g, it work fine.
And then I want to make a function to simplify it, <shift+v>:...
- 33
3
votes
1
answer
2k
views
Function that opens file for editing
Is there a function that can be called to open a file for editing? I know how to open and edit files in Vim, and I know I can use :e filename, but is there a built in function I can call that does ...
- 757
3
votes
1
answer
187
views
Defining a command on more than one line
It seems like the command command expects a one line set of arguments. What is a good way to define a command from something longer?
I suppose defining a function with no argument and then calling ...
- 3,129
3
votes
2
answers
261
views
Recursion in lambda expressions
Alright, so I have two recursion functions with the exact same purpose:
let Fac = { n -> n == 0 ? 1 : n * Fac(n - 1) }
function! Fact(n)
return a:n == 0 ? 1 : a:n * Fact(a:n - 1)
endfunction
...
- 211
3
votes
1
answer
416
views
Get correct length for unicode characters
Basically title, the length of unicode characters as calculated by the len() function is off by one, for example
:echo len("à")
2
or
:echo len("°")
2
is there a way to fix this, ...
- 179
3
votes
3
answers
128
views
remap ':' to maintain last command, and erase all char if any key other than <CR> was pressed
As the title stated, remap ':' to maintain last command, and erase all char if any key other than <CR> was pressed.
possible use cases:
I have typed a long command, and I may or may not ...
- 960
3
votes
1
answer
774
views
Improve copy to clipboard using xclip
I'm trying to improve the answer here for copying to clipboard in a vim without the +clipboard option. The problem with the above approach is that :w always writes the entire line, so it is not ...
- 133
3
votes
1
answer
750
views
Insert mode mapping to leave insert mode then invoke a plugin function
In Insert mode, I want a mapping which will return to Normal mode, then call a plugin function.
I've tried this:
inoremap <a-1> <ESC><Plug>AirlineSelectTab1
It exits Insert mode, ...
- 89
3
votes
1
answer
394
views
Vim function somehow adds Ctrl-j to macro?
I've written a short vim function that allows me to edit the contents of vim registers:
fun! RegBuff()
let vimstuff = "/tmp/vimstuff"
if !isdirectory(vimstuff)
call mkdir(vimstuff)
...
3
votes
1
answer
133
views
How do I change behavior on write based on file path?
I have the following function in my config and it works fine for formatting files on save
function! Formatonsave()
let l:lines="all"
if has('python')
pyf ~/bin/clang-format....
- 133
3
votes
1
answer
1k
views
Get column of last character in visual line - Vimscript
In one of my vim scripts I require the column of the last non-whitespace character of the current line and the column of the last character of the current line (when the current line is wrapped into ...
user9334
3
votes
2
answers
565
views
Backward search in current line with search() and z option
I am trying to write a couple of simple functions to find the next and previous links in Vimwiki and move to them. Links in Vimwiki are indicated with the syntax [[link to something]]. Since I only ...
- 275
3
votes
1
answer
1k
views
Toggle fzf.vim if already open
I am trying to write a vim function to toggle the fzf window if it is already open using fzf.vim.
The use case is if I am in the :Buffers view and I want to change to the :Files view if I try to ...
- 353
3
votes
0
answers
208
views
system function output with Chinese chars
I want to run shell command with system function and the command output has some Chinese chars.
echo system('svn status')
But I got incorrect encoding output like this:
svn: ?\232?\173?\166?\229?\...
- 31
2
votes
6
answers
1k
views
How to delete a pair of parenthesis with backspace
I'm using vim to code C++ and I want to handle the parenthesis more easily.
I knew that there was a plugin named Surround, which can help us but it is not what I expected.
I set some shortcuts as ...
- 1,013
2
votes
1
answer
739
views
Function to refactor indents and tabs
I'm writing a vim function to set hard tabs and refactor indents in a whole file.
This is the function:
function RefInd()
:set tabstop=4 softtabstop=0 noexpandtab shiftwidth=4
gg=G
...
- 23
2
votes
3
answers
185
views
Insert current date into buffer
I want to insert current date into buffer.
I did in my .vimrc - it works:
nnoremap <F5> "=strftime("%Y%m%d %H:%M:%S %Z")<CR>P
But how can I create a Vim command (e.g.: :...
2
votes
2
answers
878
views
Calling function without using call
This is just my own curiosity speaking here, but would it be possible (if it's even possible by default in normal vim, without any additional plugins etc) to call a function inside a vimscript ...
- 683
2
votes
2
answers
131
views
How can I test the script-local functions of my plugin?
I have the feeling that the answer is you can't, but I'd like to be sure about it.
My plugin has some s:function-name functions, and one plugin-name#function-name function that uses the former ones.
...
- 2,194
2
votes
2
answers
208
views
Vim 8.2 no user defined functions
Yesterday I updated Vim to version 8.2 thru my Linux distro repositories (Fedora). And now I noticed that no user defined functions exist. They worked just yesterday, before the update.
I define ...
- 692
2
votes
1
answer
327
views
Error With Simple Function Using setline()
I'm trying to start writing some Vim Script, and I've come across this issue.
fu Test()
call setline(1, getline("."))
endf
autocmd InsertCharPre * call Test()
This is in my .vimrc. When I type ...
- 521
2
votes
1
answer
763
views
How to set opfunc to a lambda function?
I've found it's common to set opfunc in this manner:
nnoremap <Leader>r :set opfunc=<SID>my_function<CR>g@
With Vim8 supporting lambda functions, is it possible to now set opfunc ...
- 177
2
votes
1
answer
75
views
How to use func to quickly add specific comments to certain lines of a file？
I wrote a function, the function is used to add comments to some lines, the content is as follows:
func Add(x)
call setline(a:x+1, "\ //*********************************************************...
2
votes
2
answers
804
views
Insert output of function with variable into buffer
I'm trying to make a vim function that takes a variable and uses that as part of a shell command and buts it into the current buffer.
I tried using read but that just interprets the var as a string.
...
- 23
2
votes
1
answer
3k
views
Inside a mapping check if a variable is empty in vim
So i'm new to vim, and specially new to vimscript, and messing around i made the following code to get the name for a file and then create said file in a new buffer. I want a way to check if FileName_ ...
- 41
2
votes
2
answers
68
views
Two consecutive identical calls to echo have different output
Question reposted on StackOverflow, where it's receiving more attention.
Given the following function in the .vimrc file,
fu! MyFun(count)
echo a:count
echo a:count
if a:count > 0
...
- 2,194
2
votes
1
answer
2k
views
How to use a value stored in a variable in the command mode?
Consider the following function
function! AbbreviationsOpen()
"go to the first word of the last line
normal G
"store the word in the register named a
let @a = expand('<cword>')
...
- 431
2
votes
2
answers
122
views
Making functions react to keypress
Im very new to vim scripting.
I have the following script in my .vimrc:
If there is no user input aka I press <CR> => go to recent buffer
If input is 'd' => delete all buffers except for ...
- 33
2
votes
1
answer
39
views
Where is the help function defined or located?
I'm trying to find where the help function/command is defined.
So far I tried:
:verbose function help
but since the h isn't in uppercase, it doesn't work (not sure if it's even a function at this ...
- 683
2
votes
2
answers
628
views
How to create an abbreviation with space
I'm trying to create an abbreviation with the command ab:
if I type if ( under INSERT mode, I want some piece of code to be printed immediately.
Here is what I've tried:
ab if<Space>( if<...
- 1,013
2
votes
1
answer
256
views
Possible to set `foldexpr` using a function reference?
Got this:
let Func = function(folding_function) "folding_function is name of function
setlocal foldexpr=call(Func(v:lnum))
This is so user can set a custom function for folding in their config file. ...
- 1,492
2
votes
1
answer
670
views
Carriage return as argument breaks the function
I have a remap that calls a function with a key combination as an argument. In this function I want to execute another remap to yet another function.
But whatever I do, it complains about a missing ...
- 1,944
2
votes
1
answer
66
views
Can't seem to get syntax information when in insert mode
This is for an indent function that should maintain the indentation should the cursor happen to be in a string region. It maintains the indentation when I hit == in normal mode but changes when I open ...
- 121
2
votes
1
answer
42
views
Can you select and execute VimL / VimScript inside another file?
Update: It is possible with '<,'>source.
I figured it out right after writing this question, no need for the complicated workaround. I am gonna still let this question here and not delete it, ...
- 469
2
votes
1
answer
2k
views
How can I define vim9 functions and vim9 lambdas in a vim9 script?
In :help vim9 I read
The Vim9 script syntax and semantics are used in:
a function defined with the :def command
a script file where the first command is vim9script
an autocommand defined in the ...
- 2,194
2
votes
1
answer
388
views
Passing arguments function with --argument or -a format
Is it possible to pass arguments to Vimscript functions with the --argument or -a format, similar to arguments in the command line?
I am writing a command that submits a job in a remote machine. I ...
- 275
2
votes
1
answer
1k
views
execute + colon character doesn't work
I want to :retab selection in my vimscript function.
When I write execute "normal! :'<,'>retab" nothing happens.
If I write:
let cmd = "normal! :'<,'>retab"
echom cmd
The output is ...
- 167
2
votes
1
answer
717
views
vim argument substitution inside a function
I would like to use the arguments passed to a function, as an argument to replace a search.
Something like this:
function! Myfunction(...)
%s/hello/ goodBye a:1, a:2/g
endfunction
Does anyone ...
- 23
2
votes
1
answer
551
views
vimscript: strange behavior of search() with flags 'be'?
vim-help :h search() says it start search at column 0 of cursor position.
Search for regexp pattern {pattern}. The search starts at the cursor
position (you can use |cursor()| to set it).
.... ...
- 960
2
votes
1
answer
527
views
join string and <cword> for vimgrep in command
I want to have a function that vimgrep for the word under the cursor appended to a predefined string.
I have defined this command:
command! -nargs=0 GJL vimgrep <cword> *.tex | copen
which ...
- 212
2
votes
2
answers
150
views
Running python code in a function
I'm having problems with latex-suite (some research indicates that many people are). The issue at hand is that they have a nifty python script that gives you a nice outline of your document and ...
- 221
2
votes
1
answer
865
views
Function does not work when called as from a mapping
I have a function that depends on the character under the cursor : if it's a ), then the function does nothing ; if it's not, the function adds a ).
function! Ket()
let char = getline(".")[col('.')...
- 1,761
2
votes
1
answer
200
views
Get current vimscript script name and line number?
In C programming language, it's typical to log a message with filename and line number of the source code file the message is coming from:
#define log(fmt, ...) printf("%s:%d: " fmt "\...
- 265
2
votes
2
answers
52
views
How could I make this mapping to a function repeatable? [duplicate]
I have a mapping that comments/uncomments lines like 5gc to comment/uncomment five lines, and I would like to make it repeatable with ..
Here is my mapping and the function it uses:
function! Comment()...
- 31
2
votes
1
answer
63
views
Different replace patterns depending on visual/visual line mode
I've written some customizations in my .vimrc that I would like to further improve and refine.
In particular, for some key combinations, I'm doing text substitutions, like this:
vmap <C-S-w> :s/\...
