[clang-tidy] Ignore all spaces in the list of checks

[DmitryPolukhin]

Summary

This diff patch fixes issue with new line character after check name and before comma. Also ignores all other types of spaces like TAB.

Test Plan: ninja check-clang-tools

[DmitryPolukhin]

Check exact list of enabled checks

[aaron.ballman]

LGTM!

clang-tools-extra/clang-tidy/GlobList.cpp

 #include "llvm/ADT/SmallString.h"
 
 using namespace clang;
 using namespace tidy;
 
 // Returns true if GlobList starts with the negative indicator ('-'), removes it
 // from the GlobList.
 static bool consumeNegativeIndicator(StringRef &GlobList) {
-  GlobList = GlobList.trim(" \r\n");
+  GlobList = GlobList.trim();
   if (GlobList.startswith("-")) {
     GlobList = GlobList.substr(1);
     return true;
   }
   return false;
 }
 
 // Converts first glob from the comma-separated list of globs to Regex and
 // removes it and the trailing comma from the GlobList.
 static llvm::Regex consumeGlob(StringRef &GlobList) {
   StringRef UntrimmedGlob = GlobList.substr(0, GlobList.find(','));
-  StringRef Glob = UntrimmedGlob.trim(' ');
+  StringRef Glob = UntrimmedGlob.trim();
   GlobList = GlobList.substr(UntrimmedGlob.size() + 1);
   SmallString<128> RegexText("^");
   StringRef MetaChars("()^$|*+?.[]\\{}");
   for (char C : Glob) {
     if (C == '*')
       RegexText.push_back('.');
     else if (MetaChars.contains(C))
       RegexText.push_back('\\');

clang-tools-extra/test/clang-tidy/infrastructure/Inputs/config-file/config-file-spaces

+Checks: "
+  -*
+  ,
+  hicpp-uppercase-literal-suffix
+  ,hicpp-use-auto
+
+
+  ,  hicpp-use-emplace
+"

clang-tools-extra/test/clang-tidy/infrastructure/config-file.cpp

 // RUN: clang-tidy -config-file=%S/Inputs/config-file/config-file -dump-config -- | FileCheck %s -check-prefix=CHECK-BASE
 // CHECK-BASE: Checks: {{.*}}hicpp-uppercase-literal-suffix
+// RUN: clang-tidy -config-file=%S/Inputs/config-file/config-file-spaces --list-checks -- | FileCheck %s -check-prefix=CHECK-SPACES
+// CHECK-SPACES: Enabled checks:
+// CHECK-SPACES-NEXT: hicpp-uppercase-literal-suffix
+// CHECK-SPACES-NEXT: hicpp-use-auto
+// CHECK-SPACES-NEXT: hicpp-use-emplace
+// CHECK-SPACES-EMPTY: