Update clang-tidy documentation.

Summary:
Updated the help message, updated description of -checks=, removed
mentions of -disable-checks.

Reviewers: klimek

Reviewed By: klimek

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3793

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@208979 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 24 insertions, 19 deletions

diff --git a/clang-tidy/tool/ClangTidyMain.cpp b/clang-tidy/tool/ClangTidyMain.cpp
index 4e815c0d..86def378 100644
--- a/clang-tidy/tool/ClangTidyMain.cpp
+++ b/clang-tidy/tool/ClangTidyMain.cpp
@@ -34,29 +34,34 @@ const char DefaultChecks[] =
     "-llvm-namespace-comment," // Not complete.
     "-google-*,";              // Doesn't apply to LLVM.
 static cl::opt<std::string>
-Checks("checks",
-       cl::desc("Comma-separated list of positive and negative globs matching\n"
-                "the names of the checks to be run."),
+Checks("checks", cl::desc("Comma-separated list of globs with optional '-'\n"
+                          "prefix. Globs are processed in order of appearance\n"
+                          "in the list. Globs without '-' prefix add checks\n"
+                          "with matching names to the set, globs with the '-'\n"
+                          "prefix remove checks with matching names from the\n"
+                          "set of enabled checks."),
        cl::init(""), cl::cat(ClangTidyCategory));
-static cl::opt<std::string> HeaderFilter(
-    "header-filter",
-    cl::desc("Regular expression matching the names of the headers to output\n"
-             "diagnostics from. Diagnostics from the main file of each\n"
-             "translation unit are always displayed."),
-    cl::init(""), cl::cat(ClangTidyCategory));
+static cl::opt<std::string>
+HeaderFilter("header-filter",
+             cl::desc("Regular expression matching the names of the\n"
+                      "headers to output diagnostics from.\n"
+                      "Diagnostics from the main file of each\n"
+                      "translation unit are always displayed."),
+             cl::init(""), cl::cat(ClangTidyCategory));
 static cl::opt<bool> Fix("fix", cl::desc("Fix detected errors if possible."),
                          cl::init(false), cl::cat(ClangTidyCategory));
 
-static cl::opt<bool> ListChecks("list-checks",
-                                cl::desc("List all enabled checks and exit."),
-                                cl::init(false), cl::cat(ClangTidyCategory));
-
-static cl::opt<bool> AnalyzeTemporaryDtors(
-    "analyze-temporary-dtors",
-    cl::desc("Enable temporary destructor-aware analysis in clang-analyzer- "
-             "checks."),
-    cl::init(false),
-    cl::cat(ClangTidyCategory));
+static cl::opt<bool>
+ListChecks("list-checks",
+           cl::desc("List all enabled checks and exit. Use with\n"
+                    "-checks='*' to list all available checks."),
+           cl::init(false), cl::cat(ClangTidyCategory));
+
+static cl::opt<bool>
+AnalyzeTemporaryDtors("analyze-temporary-dtors",
+                      cl::desc("Enable temporary destructor-aware analysis in\n"
+                               "clang-analyzer- checks."),
+                      cl::init(false), cl::cat(ClangTidyCategory));
 
 static void printStats(const clang::tidy::ClangTidyStats &Stats) {
   unsigned ErrorsIgnored = Stats.ErrorsIgnoredNOLINT +