From bee4303c323271c8d0bd26348eb045b7412e55da Mon Sep 17 00:00:00 2001
From: Vidar Holen <spam@vidarholen.net>
Date: Tue, 2 Jul 2019 20:07:05 -0700
Subject: [PATCH] Add an empty Custom.hs to simplify site-specific patching

---
 CHANGELOG.md                    |  1 +
 ShellCheck.cabal                |  1 +
 src/ShellCheck/Analyzer.hs      |  2 ++
 src/ShellCheck/Checks/Custom.hs | 21 +++++++++++++++++++++
 test/shellcheck.hs              |  2 ++
 5 files changed, 27 insertions(+)
 create mode 100644 src/ShellCheck/Checks/Custom.hs

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc05c04..c9834f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
                 to specify search paths for sourced files.
 - json1 format like --format=json but treats tabs as single characters
 - Recognize FLAGS variables created by the shflags library.
+- Site-specific changes can now be made in Custom.hs for ease of patching
 - SC2154: Also warn about unassigned uppercase variables (optional)
 - SC2252: Warn about `[ $a != x ] || [ $a != y ]`, similar to SC2055
 - SC2251: Inform about ineffectual ! in front of commands
diff --git a/ShellCheck.cabal b/ShellCheck.cabal
index 781a082..4658dd0 100644
--- a/ShellCheck.cabal
+++ b/ShellCheck.cabal
@@ -74,6 +74,7 @@ library
       ShellCheck.AnalyzerLib
       ShellCheck.Checker
       ShellCheck.Checks.Commands
+      ShellCheck.Checks.Custom
       ShellCheck.Checks.ShellSupport
       ShellCheck.Data
       ShellCheck.Fixer
diff --git a/src/ShellCheck/Analyzer.hs b/src/ShellCheck/Analyzer.hs
index 01440d8..33d2ae0 100644
--- a/src/ShellCheck/Analyzer.hs
+++ b/src/ShellCheck/Analyzer.hs
@@ -25,6 +25,7 @@ import ShellCheck.Interface
 import Data.List
 import Data.Monoid
 import qualified ShellCheck.Checks.Commands
+import qualified ShellCheck.Checks.Custom
 import qualified ShellCheck.Checks.ShellSupport
 
 
@@ -41,6 +42,7 @@ analyzeScript spec = newAnalysisResult {
 
 checkers params = mconcat $ map ($ params) [
     ShellCheck.Checks.Commands.checker,
+    ShellCheck.Checks.Custom.checker,
     ShellCheck.Checks.ShellSupport.checker
     ]
 
diff --git a/src/ShellCheck/Checks/Custom.hs b/src/ShellCheck/Checks/Custom.hs
new file mode 100644
index 0000000..76ac83c
--- /dev/null
+++ b/src/ShellCheck/Checks/Custom.hs
@@ -0,0 +1,21 @@
+{-
+    This empty file is provided for ease of patching in site specific checks.
+    However, there are no guarantees regarding compatibility between versions.
+-} 
+
+{-# LANGUAGE TemplateHaskell #-}
+module ShellCheck.Checks.Custom (checker, ShellCheck.Checks.Custom.runTests) where
+
+import ShellCheck.AnalyzerLib
+import Test.QuickCheck
+
+checker :: Parameters -> Checker
+checker params = Checker {
+    perScript = const $ return (),
+    perToken = const $ return ()
+  }
+
+prop_CustomTestsWork = True
+
+return []
+runTests = $quickCheckAll
diff --git a/test/shellcheck.hs b/test/shellcheck.hs
index d55b140..ac84116 100644
--- a/test/shellcheck.hs
+++ b/test/shellcheck.hs
@@ -6,6 +6,7 @@ import qualified ShellCheck.Analytics
 import qualified ShellCheck.AnalyzerLib
 import qualified ShellCheck.Checker
 import qualified ShellCheck.Checks.Commands
+import qualified ShellCheck.Checks.Custom
 import qualified ShellCheck.Checks.ShellSupport
 import qualified ShellCheck.Fixer
 import qualified ShellCheck.Formatter.Diff
@@ -18,6 +19,7 @@ main = do
         ,ShellCheck.AnalyzerLib.runTests
         ,ShellCheck.Checker.runTests
         ,ShellCheck.Checks.Commands.runTests
+        ,ShellCheck.Checks.Custom.runTests
         ,ShellCheck.Checks.ShellSupport.runTests
         ,ShellCheck.Fixer.runTests
         ,ShellCheck.Formatter.Diff.runTests