From 0c9bee6502f8a008bf000c7a2a5035699e269ba8 Mon Sep 17 00:00:00 2001
From: Alisue <lambdalisue@hashnote.net>
Date: Sat, 1 May 2021 00:51:59 +0900
Subject: [PATCH 1/3] Do NOT call notify on notified channel

---
 autoload/denops/server/channel.vim | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/autoload/denops/server/channel.vim b/autoload/denops/server/channel.vim
index cb2071d4..fb11f87a 100644
--- a/autoload/denops/server/channel.vim
+++ b/autoload/denops/server/channel.vim
@@ -3,6 +3,10 @@ let s:vim_exiting = 0
 let s:job = v:null
 
 function! denops#server#channel#start(notify) abort
+  let ctx = {
+        \ 'notified': 0,
+        \ 'notify': a:notify,
+        \}
   let args = [g:denops#server#channel#deno, 'run']
   let args += g:denops#server#channel#deno_args
   let args += [s:script]
@@ -13,7 +17,7 @@ function! denops#server#channel#start(notify) abort
         \ 'env': {
         \   'NO_COLOR': 1,
         \ },
-        \ 'on_stderr': funcref('s:on_stderr', [a:notify]),
+        \ 'on_stderr': funcref('s:on_stderr', [ctx]),
         \ 'on_exit': funcref('s:on_exit'),
         \ 'raw_options': raw_options,
         \})
@@ -40,9 +44,13 @@ function! denops#server#channel#request(method, params) abort
   return s:request(s:job, a:method, a:params)
 endfunction
 
-function! s:on_stderr(notify, data, ...) abort dict
+function! s:on_stderr(ctx, data, ...) abort dict
+  if a:ctx.notified
+    return
+  endif
   let address = substitute(a:data, '[\s\r\n]*$', '', '')
-  call a:notify(address)
+  let a:ctx.notified = 1
+  call a:ctx.notify(address)
   call denops#debug(printf('channel server resolve: %s', address))
 endfunction
 

From 1467d2b798c991bb7f4fbe8ec0f50acbddc45e33 Mon Sep 17 00:00:00 2001
From: Alisue <lambdalisue@hashnote.net>
Date: Sat, 1 May 2021 01:02:16 +0900
Subject: [PATCH 2/3] Do NOT automatically restart on 'start()' but skip

---
 autoload/denops/server.vim | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/autoload/denops/server.vim b/autoload/denops/server.vim
index f9af558b..5c18fe09 100644
--- a/autoload/denops/server.vim
+++ b/autoload/denops/server.vim
@@ -1,7 +1,29 @@
+let s:STATUS_STOPPED = 'stopped'
+let s:STATUS_RUNNING = 'running'
+let s:status = s:STATUS_STOPPED
+
 function! denops#server#start() abort
+  if s:status is# s:STATUS_RUNNING
+    call denops#debug('Servers are already running. Skip')
+    return
+  endif
+  let s:status = s:STATUS_RUNNING
+  call denops#server#channel#start({ address -> s:start_service(address) })
+endfunction
+
+function! denops#server#stop() abort
   call denops#server#channel#stop()
   call denops#server#service#stop()
-  call denops#server#channel#start({ address -> s:start_service(address) })
+  let s:status = s:STATUS_STOPPED
+endfunction
+
+function! denops#server#restart() abort
+  call denops#server#stop()
+  call denops#server#start()
+endfunction
+
+function! denops#server#status() abort
+  return s:status
 endfunction
 
 function! s:start_service(address) abort

From f37de435438e1be6f1fc8cbe9a848b5750583a0e Mon Sep 17 00:00:00 2001
From: Alisue <lambdalisue@hashnote.net>
Date: Sat, 1 May 2021 01:07:40 +0900
Subject: [PATCH 3/3] Do NOT run CI for Neovim nightly on macOS/Windows

---
 .github/workflows/neovim.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/neovim.yml b/.github/workflows/neovim.yml
index 36d0dcfd..ae08660d 100644
--- a/.github/workflows/neovim.yml
+++ b/.github/workflows/neovim.yml
@@ -22,6 +22,13 @@ jobs:
         version:
           - head
           - v0.4.4
+        exclude:
+          # It seems 'head' of Neovim for macOS/Windows
+          # are not available (HttpError: Not Found) is raised.
+          - os: macos-latest
+            version: head
+          - os: windows-latest
+            version: head
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2