#254 Add an option for logging the output of commands

autoload/ale/debugging.vim

@@ -76,6 +76,24 @@ function! s:EchoCommandHistory() abort
         endif
 
         echom '(' . l:status_message . ') ' . string(l:item.command)
+
+        if g:ale_history_log_output && has_key(l:item, 'output')
+            if empty(l:item.output)
+                echom ''
+                echom '<<<NO OUTPUT RETURNED>>>'
+                echom ''
+            else
+                echom ''
+                echom '<<<OUTPUT STARTS>>>'
+
+                for l:line in l:item.output
+                    echom l:line
+                endfor
+
+                echom '<<<OUTPUT ENDS>>>'
+                echom ''
+            endif
+        endif
     endfor
 endfunction
 

autoload/ale/engine.vim

@@ -214,6 +214,11 @@ function! s:HandleExit(job) abort
         return
     endif
 
+    " Log the output of the command for ALEInfo if we should.
+    if g:ale_history_enabled && g:ale_history_log_output
+        call ale#history#RememberOutput(l:buffer, l:job_id, l:output[:])
+    endif
+
     let l:linter_loclist = ale#util#GetFunction(l:linter.callback)(l:buffer, l:output)
 
     " Make some adjustments to the loclists to fix common problems.

autoload/ale/history.vim

@@ -25,17 +25,34 @@ function! ale#history#Add(buffer, status, job_id, command) abort
     let g:ale_buffer_info[a:buffer].history = l:history
 endfunction
 
-" Set an exit code for a command which finished.
-function! ale#history#SetExitCode(buffer, job_id, exit_code) abort
+function! s:FindHistoryItem(buffer, job_id) abort
     " Search backwards to find a matching job ID. IDs might be recycled,
     " so finding the last one should be good enough.
     for l:obj in reverse(g:ale_buffer_info[a:buffer].history[:])
         if l:obj.job_id == a:job_id
-            " If we find a match, then set the code and status, and stop here.
-            let l:obj.exit_code = a:exit_code
-            let l:obj.status = 'finished'
-
-            return
+            return l:obj
         endif
     endfor
+
+    return {}
+endfunction
+
+" Set an exit code for a command which finished.
+function! ale#history#SetExitCode(buffer, job_id, exit_code) abort
+    let l:obj = s:FindHistoryItem(a:buffer, a:job_id)
+
+    if !empty(l:obj)
+        " If we find a match, then set the code and status.
+        let l:obj.exit_code = a:exit_code
+        let l:obj.status = 'finished'
+    endif
+endfunction
+
+" Set the output for a command which finished.
+function! ale#history#RememberOutput(buffer, job_id, output) abort
+    let l:obj = s:FindHistoryItem(a:buffer, a:job_id)
+
+    if !empty(l:obj)
+        let l:obj.output = a:output
+    endif
 endfunction