Is it possible to add a thousands separator to a number or a selection of numbers?
Before
42
4815162342
After
42
4.815.162.342
I have to perform this operation quite often, which is why I would like for it to be automated and easy to repeat.
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As I am still relatively new to vim, if there is a better alternative or if there are improvements to be made, please do let me know.
Setup
The solution I ended up with makes use of a regular expression that is saved to a separate regex.vim file, which is sourced in init.vim. The full explanation can be found here:
init.vim
" Regular expressions
source ~/.config/nvim/regex.vim
regex.vim
" Inserts a thousand separator after \0
let sep = 's/\d\(\%\(\d\{3\}\)\+\(\d\)\@!\)\@=/\0'
Source the added regex.vim before continuing.
Usage
Upon visually selecting a number or multiple numbers with v, press : to enter Command-line mode.
Press Ctrl + r, followed by = to allow for an expression to be entered. Type the name that you gave to the regular expression in
regex.vim, e.g.sepand press Enter.
As displayed below, entering any character after the above operation should add it as the separator.
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3It could be slightly easier to define a custom command... more details to follow – D. Ben Knoble♦ Mar 9 '20 at 14:09
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1Ok, details: to make a custom command, you can do something like
command Thousands s/\d\(\%\(\d\{3\}\)\+\(\d\)\@!\)\@=/\0—then you could just do:Thousandsto run your substitute. There are more options (like arguments and!s and stuff) in:help user-commands– D. Ben Knoble♦ Mar 11 '20 at 2:05
