Fix #1031 - Make the rust flags configurable

1 files changed, 12 insertions, 6 deletions

diff --git a/ale_linters/rust/rustc.vim b/ale_linters/rust/rustc.vim
index e792faa7..3cd401b3 100644
--- a/ale_linters/rust/rustc.vim
+++ b/ale_linters/rust/rustc.vim
@@ -1,21 +1,27 @@
 " Author: Daniel Schemala <istjanichtzufassen@gmail.com>
 " Description: rustc for rust files
 
-function! ale_linters#rust#rustc#RustcCommand(buffer_number) abort
+call ale#Set('rust_rustc_options', '-Z no-trans')
+
+function! ale_linters#rust#rustc#RustcCommand(buffer) abort
     " Try to guess the library search path. If the project is managed by cargo,
     " it's usually <project root>/target/debug/deps/ or
     " <project root>/target/release/deps/
-    let l:cargo_file = ale#path#FindNearestFile(a:buffer_number, 'Cargo.toml')
+    let l:cargo_file = ale#path#FindNearestFile(a:buffer, 'Cargo.toml')
 
     if l:cargo_file isnot# ''
-        let l:project_root = fnamemodify(l:cargo_file, ':h')
-        let l:dependencies = '-L ' . l:project_root . '/target/debug/deps -L ' .
-        \   l:project_root . '/target/release/deps'
+        let l:root = fnamemodify(l:cargo_file, ':h')
+        let l:dependencies = ' -L ' . ale#Escape(ale#path#GetAbsPath(l:root, 'target/debug/deps'))
+        \   . ' -L ' . ale#Escape(ale#path#GetAbsPath(l:root, 'target/release/deps'))
     else
         let l:dependencies = ''
     endif
 
-    return 'rustc --error-format=json -Z no-trans ' . l:dependencies . ' -'
+    let l:options = ale#Var(a:buffer, 'rust_rustc_options')
+
+    return 'rustc --error-format=json'
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . l:dependencies . ' -'
 endfunction
 
 call ale#linter#Define('rust', {