Updated plugins

sources_non_forked/ale/autoload/ale/maven.vim

@@ -17,7 +17,6 @@ function! ale#maven#FindProjectRoot(buffer) abort
     return ''
 endfunction
 
-
 " Given a buffer number, find the path to the executable.
 " First search on the path for 'mvnw' (mvnw.cmd on Windows), if nothing is found,
 " try the global command. Returns an empty string if cannot find the executable.
@@ -25,7 +24,7 @@ function! ale#maven#FindExecutable(buffer) abort
     let l:wrapper_cmd = has('unix') ? 'mvnw' : 'mvnw.cmd'
     let l:wrapper_path = ale#path#FindNearestFile(a:buffer, l:wrapper_cmd)
 
-    if executable(l:wrapper_path)
+    if !empty(l:wrapper_path) && executable(l:wrapper_path)
         return l:wrapper_path
     endif
 
@@ -36,16 +35,23 @@ function! ale#maven#FindExecutable(buffer) abort
     return ''
 endfunction
 
-" Given a buffer number, build a command to print the classpath of the root
-" project. Returns an empty string if cannot build the command.
+" Given a buffer number, get a working directory and command to print the
+" classpath of the root project.
+"
+" Returns an empty string for the command if Maven is not detected.
 function! ale#maven#BuildClasspathCommand(buffer) abort
     let l:executable = ale#maven#FindExecutable(a:buffer)
-    let l:project_root = ale#maven#FindProjectRoot(a:buffer)
 
-    if !empty(l:executable) && !empty(l:project_root)
-        return ale#path#CdString(l:project_root)
-        \ . l:executable . ' dependency:build-classpath'
+    if !empty(l:executable)
+        let l:project_root = ale#maven#FindProjectRoot(a:buffer)
+
+        if !empty(l:project_root)
+            return [
+            \   l:project_root,
+            \   ale#Escape(l:executable) . ' dependency:build-classpath'
+            \]
+        endif
     endif
 
-    return ''
+    return ['', '']
 endfunction