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I want to go to a vue component file.

Vue component filenames are written in PascalCase: ExampleComponent.vue

In html (or in my case blade.php) the ExampleComponent.vue is instantiated by <example-component> (kebab-case). When my cursor is over <example-component> I get E447: Can't find file "container-gallery" in path

In the docs is written:

If the file can't be found, 'includeexpr' is used to
modify the name and another attempt is done.

So my Question is how do I use includeexpr in order to change from

example-component

to

resources/js/components/ExampleComponent.vue

Further research pointed me to the substitute function: :set includeexpr=substitute(v:fname, ..... )

but then I would need to preprocess the v:fname variable. A hint how to tackle that problem would be highly appreciated.

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    The problem gets simpler if path includes resources/js/components and suffixesadd includes .vue; then includeexpr only has to change example-component to ExampleComponent. This might be doable as a simple substitute; if not, you might be able to grab some code from tpope/abolish (the coercion mappings do similar transformations) – D. Ben Knoble Apr 6 at 14:01
  • @D.BenKnoble, I set the right path and the suffixesadd and it works for ExampleComponent. Now in order to transform kebab-case to PascalCase I used regex. echo substitute('kebab-case','\(\w\+\)\(\-\)\(\w\+\)','\u\1\u\3','') prints KebabCase. But setlocal includeexpr=substitute(v:fname,'\(\w\+\)\(\-\)\(\w\+\)','\u\1\u\3','') does not work. what am I missing? – Piet Pro Apr 7 at 10:35
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I wrapped the substitute function in a own function:

function! B(name)
   return substitute(a:name,'\(\w\+\)\(\-\)\(\w\+\)','\u\1\u\3','')
endfunction`

~~/.vim/bundle/vim-blade/ftplugin/blade.vim --->this plugin overwrites my setlocal path so for a quick fix I added my changes to that plugin:

11 setlocal suffixesadd=.blade.php,.php,.vue
12 " setlocal includeexpr=substitute(v:fname,'\\.','/','g')
13 setlocal includeexpr=B(v:fname)
14 setlocal path+=resources/views;
15 setlocal path+=resources/js/components/;
16 setlocal path+=resources/js/components/gallery;

Instead of calling directly the substitution function I call my function B. I have no idea why I had to wrap substition in a custom function. It's not perfect, but now it changes from kebab-case to PascalCase and finds my vue-files. Suggestions for improvements are welcome.

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  • Notes: use ~/.vim/after/ftplugin/blade.vim and you’re able to override all previous ftplugins where you want to. As for setting indentexpr, try your original and then run setlocal indentexpr?, I bet there’s an issue with escaping. One solution is to use let l:&indentexpr which assigns the option to a string; no escaping for set necessary. – D. Ben Knoble Apr 7 at 12:30

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