Questions tagged [functions]

Question about the use of functions in Vimscript defined in the `.vimrc` or a script file.

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1answer
66 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 ...
2
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1answer
472 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 ...
2
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1answer
56 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 ...
2
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1answer
227 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 ...
2
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1answer
218 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). .... ...
2
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2answers
105 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 ...
2
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1answer
615 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('.')...
2
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1answer
485 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 ...
2
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1answer
29 views

Remapping `v` in netrw/calling NetrwSplit(5) directly

So I've created some helper functions to help work around netrw. They are some keybind simplifications that help with things like window/cursor management when opening files, where to open them, ...
2
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0answers
46 views

Adjust terminal size using a system call from within Vim

All, I have a little function I'm trying to fix. I'd like to change my terminal Vim window size using the ASCII escape sequence \e[8;40;130t so that my writing window size stays the same when I use a ...
2
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0answers
164 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) ...
2
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0answers
46 views

Why does append(…, readfile()) add a zero when run using Ctrl-R?

While looking for ways to solve How can I create a /* comments section with /// like in XCode?, I cam across this puzzling behaviour. Say I have foo.txt containing: /*! * @author Robbie Yi JIANG, 29-...
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2answers
40 views

Function to remove all trailing whitespace

I have the following function to remove every trailing white space from the document, without changing my cursor position function! StripTrailingWhitespaces() let l = line('.') let c = col('.') ...
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4answers
301 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
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1answer
81 views

Make mapping that accepts count independent of line count

I have a mapping that looks like this: nnoremap <expr> <c-x>b ":call MyFunction(" . v:count . ")\<cr>" I also tried to instead define function with range, but the effect is the ...
1
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1answer
46 views

Yank both sides of equation

While writing in latex I often want to copy a math equation's right hand side or left hand side. For example I have something like this \begin{gather*} 5 \cdot \left( A A 3 \right) + 50 \cdot \...
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2answers
55 views

sourcing .vimrc function does not work

I am using nvim v0.4.3. This is the latest version available in repository. I have an Arch build with the most up to date packages and kernel 5.6.4-arch1-1. I have the below function in my ~/.vimrc: ...
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3answers
37 views

How to loop backwards through getline

I want to code a vim function, which searches backwards a specific char from the cursor at the current line. Here is what I've done: function! CustomSearch() let currentLine = getline(".") "...
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3answers
91 views

Is it possible to create map to call Funcref (including lambda)?

Is it possible to do this: function Foo(func_ref) abort nnoremap <buffer> <cr> :find_a_way_to_call_func_ref endfunction function s:callback() abort echo "123" endfunction command ...
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2answers
477 views

vimscript: get result of cmdline-completion Ctrl-a

Need a function that, returns a string, which is result of cmdline-completion Ctrl-a, i.e., a list of words seperated by space. given an input string of partial ex-command. For example, given :h ...
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2answers
482 views

Call function on several lines

I have a function that changes the 6th caracter of a line to a dollar symbol ($). I want it to be performed on several lines, so I naively did a "while" loop using a counter (as shown under). But ...
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2answers
59 views

VIM command to insert multiline text with argument

new VIM user. I'm trying to make creating python properties easier for my class definitions. What I would like for say I type :pyp x then VIM will autofill where my cursor is @property def x(self):...
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3answers
132 views

NERDTree maximize on enter

I'd like to maximize NERDTree when I enter the NERDTree buffer. The command I have so far is: autocmd BufEnter NERD_tree_* <A> ...but the <A> part is wrong. I get the error: E21: Cannot ...
1
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1answer
24 views

How to check whether a command is run with range or not?

For example, I have the following code command! -range Test call TestFunc() function! TestFunc() abort " if run with range " get selected content " else " get current word under the ...
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1answer
48 views

vim expression unusual behavior

While playing with map() I get an error, which I cannot understand. In essense, pu=map(getcompletion('*','event'), '"h" . v:val') pu=map(getcompletion('*','event'), "'h' . v:val") pu=map(...
1
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1answer
108 views

calling function from normal mode without *noremap

I realise this might be impossible, but thought it might be worth asking anyway. In vim, the typical way I map keys to functions is using *noremap commands. However the downside of this is the fact ...
1
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1answer
21 views

How to get a function to print something to colon command and let user edit it?

I need to write a function that when executed it opens colon command and paste some stuff on to it and let user edit it before executing the command. for example function! EditRelativePath() :e ...
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1answer
50 views

Vim is executing commands that were part of a function definition

On one copy of Vim that I use sometimes, I get errors like this when I start up: Error detected while processing /home/besham/.vimrc: line 524: E749: empty buffer line 555: E749: empty buffer line ...
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1answer
46 views

How do I get help for a specific package?

I am at a phase of cleaning up my choice of plugins and I want to read the documentation provided by a package through vim it self. With that in mind, I don't know a way to: get to the top of the ...
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1answer
62 views

How to transform this mapping into a function?

So I made this mapping "%p$?/<CR>d$V"uy:cd <C-r>u<CR> That is the crux of the mapping but it leaves artifacts in the current file, that is part of what I want to avoid. My attempt ...
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1answer
84 views

Can I map the number of search matches to a key?

I'd like to map 0 to whatever number of matches I currently have. For example: This here has 5 matches. If I wanted to perform a macro on every instance, i'd like to be able to simply type: 0Q (Q ...
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2answers
33 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
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1answer
33 views

Unexpected behavior with feedkeys

Consider the following code snippet, which aims to provide y without moving the cursor. function! Yank_fixed_cursor() let save_cursor = getcurpos() call feedkeys("y", 'nitx') call setpos('...
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3answers
58 views

Create a mapping for a “smart” Home key

With other text editors, if you press Home, it first takes you to the indent, then all the way to the left. Is this possible with Vim?
1
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1answer
70 views

Error detected while processing grammarous.vim: E117: Unknown function

I am trying to install the vim-grammarous plugin for Vim 8.0.1453. I have cloned the repo into my .vim/plugin directory. Now every time I open Vim I get an error message which also occurs when I try ...
1
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1answer
43 views

vim8 - why does my 0read not read? [closed]

I have the following function in an autoload file: function! closet#FindSkeletonForFile() if exists('b:closet_skeleton') return 0 endif let b:closet_skeleton = s:closet....
1
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2answers
78 views

Insert text in the middle of a string vimscript

I'm trying to make a function in vimscript that converts markdown to html files using pandoc and putting that converted file in a specified directory. Currently i am putting the file in a directory ...
1
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2answers
262 views

Gvim - Change window position horizontally

I want to create a command that will place my gvim window to a different "x" location on my screen while maintaining the "y" position. I do this in my _gvimrc by calling winpos 319 16 I want to ...
1
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1answer
92 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. ...
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1answer
125 views

Function arguments + shell

I'm trying to write a command for adding a Python import line. The problem is that what's added it import a:name and not the module name. Here's the code func! PyImport(name) w silent !isort ...
1
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1answer
94 views

Binding horizontal scroll in a function with feedkeys

I'm trying to create a function to make editing TSV files easier. The function changes spacing settings, turns off wrapping, and creates a 1 row tall split at the top so that the column headers are ...
1
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2answers
128 views

separating folds with constant amount of newlines

Is there a succinct way to separate folds, open or closed, by the same number of newlines throughout the buffer? I'm using fold by indent. The goal is two visible blank lines between each fold (...
1
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1answer
408 views

How to source .vimrc inside a function in .vimrc?

This is part of my vimrc-- function! Abbreviations() let a:code=input("Which Abbreviation: ") "gen if(a:code=="gen") source ~/.vim/Abbreviations/GeneralAbbreviations.vim endif ...
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1answer
217 views

How to use function returns?

I want to create a function to copy VHDL component. I can get the component start and end line number as returned value from other functions. But don't know how to use the returns to copy the ...
1
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1answer
367 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 ...
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1answer
11 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 ...
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1answer
11 views

Saving and resetting alternate file

I have the following in my vimrc to open pdfs externally with xpdf. function! OpenPdfExternally() silent execute "!xpdf " . shellescape(expand("%:p")) . " &>/dev/null &" edit # ...
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1answer
14 views

How can I replicate behaviour of go-to command? (42gg, 42G)

I've been searching far and wide around tutorials, :help command, source code, Stacks but maybe I just can't form my query correctly in the vimscript lingo. My goal is to have a short command for ...
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1answer
33 views

Nvim external commands to write and delete files inside a function

I use Neovim in a Linux (Arch Linux) environment. I have written a function to help me preview my markdown documents in PDF format without using a whole plugin. I've also added a simple command named "...
1
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1answer
42 views

How to execute with call and <C-R>/ matching?

I want to count the searching pattern and here is my code: execute '%s/' <C-R>/ '/\=' . Count(submatch(0)) . '/gn' Here is my Count function: function! Count(match) if has_key(b:types, a:...