Code Action generate mut trait noeffect $0 #1320
Description
What's the output of :CocInfo
## versions
vim version: VIM - Vi IMproved 9.1 9011362
node version: v23.9.0
coc.nvim version: 0.0.82-cd4a6b6 2025-05-21 20:12:09 +0800
coc.nvim directory: /home/lrne/.vim/plugged/coc.nvim
term: dumb
platform: linux
## Log of coc.nvim
2025-07-25T22:46:17.118 INFO (pid:16828) [plugin] - coc.nvim initialized with node: v23.9.0 after 775
2025-07-25T22:46:17.123 INFO (pid:16828) [services] - LanguageClient Rust Analyzer Language Server state change: stopped => starting
2025-07-25T22:46:17.146 INFO (pid:16828) [language-client-index] - Language server "rust-analyzer" started with 16864
2025-07-25T22:46:17.530 INFO (pid:16828) [services] - LanguageClient Rust Analyzer Language Server state change: starting => running
2025-07-25T22:46:17.558 INFO (pid:16828) [services] - service rust-analyzer started
2025-07-25T22:46:42.931 INFO (pid:16828) [attach] - receive notification: codeAction [ 'cursor' ]
2025-07-25T22:46:45.151 INFO (pid:16828) [extension:coc-rust-analyzer] - {
range: { start: { line: 1, character: 0 }, end: { line: 1, character: 0 } },
newText: '$0impl std::ops::IndexMut<&str> for Foo {\n' +
' fn index_mut(&mut self, index: &str) -> &mut Self::Output {\n' +
' &mut ()\n' +
' }\n' +
'}\n' +
'\n'
}
2025-07-25T22:46:48.800 INFO (pid:16828) [attach] - receive notification: showInfo []
What's the output of :CocCommand rust-analyzer.serverVersion
rust-analyzer 1.90.0-nightly (9748d87 2025-07-21)
What's your coc-rust-analyzer version? You can get it from :CocList extensions
+ coc-rust-analyzer 0.83.0
src/main.rs
pub struct Foo;
impl std::ops::Index<&str> for Foo {
type Output = ();
fn index(&self, index: &str) -> &Self::Output {
&()
}
}
fn main() {}On line2 ops click 3. Generate `IndexMut` impl from this `Index` trai
Output:
pub struct Foo;
$0impl std::ops::IndexMut<&str> for Foo {
fn index_mut(&mut self, index: &str) -> &mut Self::Output {
&mut ()
}
}
impl std::ops::Index<&str> for Foo {
type Output = ();
fn index(&self, index: &str) -> &Self::Output {
&()
}
}
fn main() {}mini-vimrc:
colorscheme habamax
set nu
set laststatus=2
set statusline=%<%f\ %h%m%r%=%-14.(%l,%c%V%)\ %P
set statusline^=%(%1*[%{coc#status()}%{get(b:,'coc_current_function','')}]%*\ %)
call plug#begin('~/.vim/plugged')
Plug 'neoclide/coc.nvim'
call plug#end()
inoremap <silent><expr> <cr> foldclosed('.') != -1
\ ? execute("foldopen!")
\ : coc#pum#visible() ? coc#pum#confirm()
\ : "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
nmap <F3> <Plug>(coc-codeaction-cursor)coc-settings.json:
{
"rust-analyzer.updates.checkOnStartup": false
}Metadata
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