From 663fe75d0faaf038e6f5e67a97940bf10990c0f0 Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Thu, 12 Oct 2017 23:25:41 +0100
Subject: [PATCH] #965 - Make the cursor echo delay configurable

---
 autoload/ale/cursor.vim |  7 ++++++-
 doc/ale.txt             | 12 ++++++++++++
 plugin/ale.vim          |  2 ++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/autoload/ale/cursor.vim b/autoload/ale/cursor.vim
index f5394a43..6238b4a9 100644
--- a/autoload/ale/cursor.vim
+++ b/autoload/ale/cursor.vim
@@ -113,8 +113,13 @@ function! ale#cursor#EchoCursorWarningWithDelay() abort
     " we should echo something. Otherwise we can end up doing processing
     " the echo message far too frequently.
     if l:pos != s:last_pos
+        let l:delay = ale#Var(bufnr(''), 'echo_delay')
+
         let s:last_pos = l:pos
-        let s:cursor_timer = timer_start(10, function('ale#cursor#EchoCursorWarning'))
+        let s:cursor_timer = timer_start(
+        \   l:delay,
+        \   function('ale#cursor#EchoCursorWarning')
+        \)
     endif
 endfunction
 
diff --git a/doc/ale.txt b/doc/ale.txt
index 817191f5..1e6b396d 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -541,6 +541,18 @@ g:ale_echo_cursor                                           *g:ale_echo_cursor*
   The format of the message can be customizable in |g:ale_echo_msg_format|.
 
 
+g:ale_echo_delay                                             *g:ale_echo_delay*
+                                                             *b:ale_echo_delay*
+  Type: |Number|
+  Default: `10`
+
+  Given any integer, this option controls the number of milliseconds before
+  ALE will echo a message for a problem near the cursor.
+
+  The value can be increased to decrease the amount of processing ALE will do
+  for files displaying a large number of problems.
+
+
 g:ale_echo_msg_error_str                             *g:ale_echo_msg_error_str*
 
   Type: |String|
diff --git a/plugin/ale.vim b/plugin/ale.vim
index 2f188d2d..9fac75ee 100644
--- a/plugin/ale.vim
+++ b/plugin/ale.vim
@@ -155,6 +155,8 @@ let g:ale_echo_msg_warning_str = get(g:, 'ale_echo_msg_warning_str', 'Warning')
 
 " This flag can be set to 0 to disable echoing when the cursor moves.
 let g:ale_echo_cursor = get(g:, 'ale_echo_cursor', 1)
+" Controls the milliseconds delay before echoing a message.
+let g:ale_echo_delay = get(g:, 'ale_echo_delay', 10)
 
 " This flag can be set to 0 to disable balloon support.
 call ale#Set('set_balloons', has('balloon_eval'))