rajasegar / vim-astro

Vim plugin for Astro

vim-astro

Vim syntax highlighting and indentation for Astro

This is mostly just HTML syntax highlighting with some keywords added

Dependencies

The JavaScript highlighting depends on pangloss/vim-javascript. That ships with sheerun/vim-polyglot so if you're already using that then you should be set.

Installation

The simplest way to install vim-astro is via a package manager like Pathogen, Vundle, NeoBundle, Plug, or minpac.

For example, using minpac:

call minpac#add('rajasegar/vim-astro')

Or using Plug:

Plug 'rajasegar/vim-astro', {'branch': 'main'}

Options

To disable indentation within --- and <style> tags, set one of these variables in your vimrc:

let g:astro_indent_script = 0
let g:astro_indent_style = 0

Integrations

• ALE: vim-astro should work out of the box with eslint and a few other linters/fixers. PRs welcome if the one you want is missing.
• matchit.vim: vim-astro should work out of the box and allow moving between HTML tags as well as flow control like #if/:else//if.

Tests

Indentation tests are provided and any contributions would be much appreciated. They can be run with make test which will clone vader.vim into the current working directory and run the test suite.

vim-astro's Issues

Indenting is very slow

Currently, indenting a .astro file with this plugin is very, very slow - a test on a 27-line file took 8 seconds.

I tried to profile the GetAstroIndent function, and the culprit seems to be the execute 'let indent = ' . get(language, 'indentexpr', -1) line:

FUNCTION  GetAstroIndent()
    Defined: ~/Projects/vim-astro/indent/astro.vim line 41
Called 26 times
Total time:   8.593040
 Self time:   0.001695

count  total (s)   self (s)
   45              0.000092   for language in s:languages
   44              0.000605     let opening_tag_line = searchpair(language.pairs[0], '', language.pairs[1], 'bWr')
                            
   44              0.000041     if opening_tag_line
   25   8.591538   0.000205       execute 'let indent = ' . get(language, 'indentexpr', -1)
   25              0.000019       break
   19              0.000008     endif
   45              0.000039   endfor
                            
   26              0.000050   if exists('l:indent')
   25              0.000213     if (opening_tag_line == prevnonblank(v:lnum - 1) || opening_tag_line == v:lnum) || getline(v:lnum) =~ '\v^\s*\</style'
    3              0.000003       return 0
   22              0.000007     endif
                            
                            
   22              0.000100     if (opening_tag_line == prevnonblank(v:lnum - 1) || opening_tag_line == v:lnum) || getline(v:lnum) =~ '\v^\s*---'
    1              0.000001       return 0
   21              0.000005     endif
    1              0.000001   else
                                " Couldn't find language, fall back to html
    1   0.000034   0.000020     execute 'let indent = ' . s:html_indent
   22              0.000008   endif
                            
   22              0.000017   return indent

FUNCTIONS SORTED ON TOTAL TIME
count  total (s)   self (s)  function
   26   8.593040   0.001695  GetAstroIndent()

FUNCTIONS SORTED ON SELF TIME
count  total (s)   self (s)  function
   26   8.593040   0.001695  GetAstroIndent()

Is there any possible way to speed this up?