From 81d993086eae20cd8d2871b62e8889e54cfa9187 Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Tue, 17 Oct 2017 00:37:29 +0100
Subject: [PATCH] #904 - Allow linting to run on save a second after :q fails

---
 autoload/ale/events.vim                  | 11 +++++++---
 autoload/ale/fix.vim                     |  2 +-
 test/test_no_linting_on_write_quit.vader | 26 ++++++++++++++++++++++++
 test/test_quitting_variable.vader        | 21 +++++++++++++++++--
 4 files changed, 54 insertions(+), 6 deletions(-)

diff --git a/autoload/ale/events.vim b/autoload/ale/events.vim
index 1992b1e..a7f6b37 100644
--- a/autoload/ale/events.vim
+++ b/autoload/ale/events.vim
@@ -2,21 +2,26 @@
 
 function! ale#events#QuitEvent(buffer) abort
     " Remember when ALE is quitting for BufWrite, etc.
-    call setbufvar(a:buffer, 'ale_quitting', 1)
+    call setbufvar(a:buffer, 'ale_quitting', ale#util#ClockMilliseconds())
+endfunction
+
+function! ale#events#QuitRecently(buffer) abort
+    let l:time = getbufvar(a:buffer, 'ale_quitting', 0)
+
+    return l:time && ale#util#ClockMilliseconds() - l:time < 1000
 endfunction
 
 function! ale#events#SaveEvent(buffer) abort
     call setbufvar(a:buffer, 'ale_save_event_fired', 1)
     let l:should_lint = ale#Var(a:buffer, 'enabled')
     \   && g:ale_lint_on_save
-    \   && !getbufvar(a:buffer, 'ale_quitting')
 
     if g:ale_fix_on_save
         let l:will_fix = ale#fix#Fix('save_file')
         let l:should_lint = l:should_lint && !l:will_fix
     endif
 
-    if l:should_lint
+    if l:should_lint && !ale#events#QuitRecently(a:buffer)
         call ale#Queue(0, 'lint_file', a:buffer)
     endif
 endfunction
diff --git a/autoload/ale/fix.vim b/autoload/ale/fix.vim
index 2b5387d..a9bb7d4 100644
--- a/autoload/ale/fix.vim
+++ b/autoload/ale/fix.vim
@@ -58,7 +58,7 @@ function! ale#fix#ApplyQueuedFixes() abort
     " fixing problems.
     if g:ale_enabled
     \&& l:should_lint
-    \&& !getbufvar(l:buffer, 'ale_quitting')
+    \&& !ale#events#QuitRecently(l:buffer)
         call ale#Queue(0, l:data.should_save ? 'lint_file' : '')
     endif
 endfunction
diff --git a/test/test_no_linting_on_write_quit.vader b/test/test_no_linting_on_write_quit.vader
index dc78ef7..271adf6 100644
--- a/test/test_no_linting_on_write_quit.vader
+++ b/test/test_no_linting_on_write_quit.vader
@@ -55,6 +55,19 @@ Execute(No linting should be done on :wq or :x):
 
   AssertEqual [], getloclist(0)
 
+Execute(No linting should be for :w after :q fails):
+  let g:ale_lint_on_save = 1
+  let g:ale_fix_on_save = 0
+
+  call ale#events#QuitEvent(bufnr(''))
+
+  " Simulate 2 seconds passing.
+  let b:ale_quitting -= 1000
+
+  call ale#events#SaveEvent(bufnr(''))
+
+  AssertEqual 1, len(getloclist(0))
+
 Execute(No linting should be done on :wq or :x after fixing files):
   let g:ale_lint_on_save = 0
   let g:ale_fix_on_save = 1
@@ -69,3 +82,16 @@ Execute(No linting should be done on :wq or :x after fixing files):
   call ale#events#SaveEvent(bufnr(''))
 
   AssertEqual [], getloclist(0)
+
+Execute(Linting should be done after :q fails and fixing files):
+  let g:ale_lint_on_save = 0
+  let g:ale_fix_on_save = 1
+
+  call ale#events#QuitEvent(bufnr(''))
+
+  " Simulate 2 seconds passing.
+  let b:ale_quitting -= 1000
+
+  call ale#events#SaveEvent(bufnr(''))
+
+  AssertEqual 1, len(getloclist(0))
diff --git a/test/test_quitting_variable.vader b/test/test_quitting_variable.vader
index 80b0a8d..bef344a 100644
--- a/test/test_quitting_variable.vader
+++ b/test/test_quitting_variable.vader
@@ -8,11 +8,15 @@ After:
   Restore
 
   unlet! b:ale_quitting
+  unlet! b:time_before
+
+Execute(QuitEvent should set b:ale_quitting some time from the clock):
+  let b:time_before = ale#util#ClockMilliseconds()
 
-Execute(QuitEvent should set b:ale_quitting to 1):
   call ale#events#QuitEvent(bufnr(''))
 
-  AssertEqual 1, b:ale_quitting
+  Assert b:ale_quitting >= b:time_before
+  Assert b:ale_quitting <= ale#util#ClockMilliseconds()
 
 Execute(EnterEvent should set b:ale_quitting to 0):
   let b:ale_quitting = 1
@@ -20,3 +24,16 @@ Execute(EnterEvent should set b:ale_quitting to 0):
   call ale#events#EnterEvent(bufnr(''))
 
   AssertEqual 0, b:ale_quitting
+
+Execute(The QuitRecently function should work when the variable isn't set):
+  AssertEqual 0, ale#events#QuitRecently(bufnr(''))
+
+Execute(The QuitRecently function should return 1 when ALE quit recently):
+  let b:ale_quitting = ale#util#ClockMilliseconds()
+
+  AssertEqual 1, ale#events#QuitRecently(bufnr(''))
+
+Execute(The QuitRecently function should return 0 when a second has passed):
+  let b:ale_quitting = ale#util#ClockMilliseconds() - 1001
+
+  AssertEqual 0, ale#events#QuitRecently(bufnr(''))