From 4ceba225c81f337caf42a82d00a4cc9456521748 Mon Sep 17 00:00:00 2001
From: Joshua Downer <joshua.downer@riftio.com>
Date: Mon, 11 Apr 2016 20:27:34 -0400
Subject: [PATCH 1/4] added pyang.vim to syntax checkers

---
 plugin/syntastic/registry.vim  |  1 +
 syntax_checkers/yang/pyang.vim | 36 ++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 syntax_checkers/yang/pyang.vim

diff --git a/plugin/syntastic/registry.vim b/plugin/syntastic/registry.vim
index f97f7a2d..74fade22 100644
--- a/plugin/syntastic/registry.vim
+++ b/plugin/syntastic/registry.vim
@@ -102,6 +102,7 @@ let s:_DEFAULT_CHECKERS = {
         \ 'xquery':        ['basex'],
         \ 'yacc':          ['bison'],
         \ 'yaml':          ['jsyaml'],
+        \ 'yang':          ['pyang'],
         \ 'z80':           ['z80syntaxchecker'],
         \ 'zpt':           ['zptlint'],
         \ 'zsh':           ['zsh'],
diff --git a/syntax_checkers/yang/pyang.vim b/syntax_checkers/yang/pyang.vim
new file mode 100644
index 00000000..42514dcf
--- /dev/null
+++ b/syntax_checkers/yang/pyang.vim
@@ -0,0 +1,36 @@
+"============================================================================
+"File:        pyang.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Authors:     joshua.downer@gmail.com
+"
+"============================================================================
+
+if exists('g:loaded_syntastic_yang_pyang_checker')
+    finish
+endif
+let g:loaded_syntastic_yang_pyang_checker = 1
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+function! SyntaxCheckers_yang_pyang_GetLocList() dict
+    let makeprg = self.makeprgBuild({})
+
+    let errorformat = '%f:%l:%m'
+
+    return SyntasticMake({
+        \ 'makeprg': makeprg,
+        \ 'errorformat': errorformat,
+        \ 'postprocess': ['filterForeignErrors'] })
+endfunction
+
+runtime! syntax_checkers/yang/pyang.vim
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'yang',
+    \ 'name': 'pyang'})
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set sw=4 sts=4 et fdm=marker:

From 035b1551188ba29327e26d3389692fc3743f7787 Mon Sep 17 00:00:00 2001
From: Joshua Downer <joshua.downer@riftio.com>
Date: Tue, 12 Apr 2016 05:21:56 -0400
Subject: [PATCH 2/4] added license to pyang.vim

---
 syntax_checkers/yang/pyang.vim | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/syntax_checkers/yang/pyang.vim b/syntax_checkers/yang/pyang.vim
index 42514dcf..3b23c899 100644
--- a/syntax_checkers/yang/pyang.vim
+++ b/syntax_checkers/yang/pyang.vim
@@ -2,6 +2,11 @@
 "File:        pyang.vim
 "Description: Syntax checking plugin for syntastic.vim
 "Authors:     joshua.downer@gmail.com
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
 "
 "============================================================================
 

From daffe39dcfd70513e7ccf0e5e765fb492c0e374f Mon Sep 17 00:00:00 2001
From: Joshua Downer <joshua.downer@riftio.com>
Date: Tue, 12 Apr 2016 07:02:19 -0400
Subject: [PATCH 3/4] identify errors and warnings

---
 syntax_checkers/yang/pyang.vim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/syntax_checkers/yang/pyang.vim b/syntax_checkers/yang/pyang.vim
index 3b23c899..68e5d85f 100644
--- a/syntax_checkers/yang/pyang.vim
+++ b/syntax_checkers/yang/pyang.vim
@@ -21,7 +21,9 @@ set cpo&vim
 function! SyntaxCheckers_yang_pyang_GetLocList() dict
     let makeprg = self.makeprgBuild({})
 
-    let errorformat = '%f:%l:%m'
+    let errorformat =
+        \ '%W%f:%l: warning: %m,' .
+        \ '%E%f:%l: error: %m'
 
     return SyntasticMake({
         \ 'makeprg': makeprg,

From 36f84ef79d8442b49e811f6a95a4a8c2e78df269 Mon Sep 17 00:00:00 2001
From: Joshua Downer <joshua.downer@riftio.com>
Date: Tue, 12 Apr 2016 07:02:58 -0400
Subject: [PATCH 4/4] remove unnecessary call to runtime!

---
 syntax_checkers/yang/pyang.vim | 2 --
 1 file changed, 2 deletions(-)

diff --git a/syntax_checkers/yang/pyang.vim b/syntax_checkers/yang/pyang.vim
index 68e5d85f..5f247eb2 100644
--- a/syntax_checkers/yang/pyang.vim
+++ b/syntax_checkers/yang/pyang.vim
@@ -31,8 +31,6 @@ function! SyntaxCheckers_yang_pyang_GetLocList() dict
         \ 'postprocess': ['filterForeignErrors'] })
 endfunction
 
-runtime! syntax_checkers/yang/pyang.vim
-
 call g:SyntasticRegistry.CreateAndRegisterChecker({
     \ 'filetype': 'yang',
     \ 'name': 'pyang'})