Integrate clang-tidy

.clang-tidy

@@ -0,0 +1,14 @@
+---
+Checks:          'clang-diagnostic-*,clang-analyzer-*,readability-*,modernize-*,bugprone-*,misc-*,-misc-unused-parameters,google-runtime-int,-llvm-header-guard,fuchsia-restrict-system-includes,-clang-analyzer-valist.Uninitialized,-clang-analyzer-security.insecureAPI.rand,-clang-analyzer-alpha.*,-readability-magic-numbers,-readability-braces-around-statements'
+WarningsAsErrors: '*'
+HeaderFilterRegex: '.*(?<!lookup3.c)$'
+FormatStyle: 'file'
+CheckOptions:
+  - key:             readability-braces-around-statements.ShortStatementLines
+    value:           '1'
+  - key:             google-runtime-int.TypeSufix
+    value:           '_t'
+  - key:             fuchsia-restrict-system-includes.Includes
+    value:           '*,-stdint.h,-stdbool.h'
+
+...

.travis.yml

@@ -20,10 +20,14 @@ matrix:
     - os: osx
       compiler: clang
 
+install:
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then if [[ "$CC" == "clang" ]]; then brew update; brew install llvm; export PATH="/usr/local/opt/llvm/bin:$PATH"; fi; fi
+
 script:
   - export CFLAGS=-Werror;
   - make clean; make;
   - make clean;
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then if [[ "$CC" == "clang" ]]; then clang-tidy *.h *.c -- -I/usr/include; fi; fi
 
 before_deploy:
   - cd ..

nnn.c

@@ -64,7 +64,6 @@
 #ifndef __USE_XOPEN /* Fix failure due to wcswidth(), ncursesw/curses.h includes whcar.h on Ubuntu 14.04 */
 #define __USE_XOPEN
 #endif
-#include <curses.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>

nnn.h

@@ -28,6 +28,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#pragma once
+
+#include <curses.h>
+
 #define CONTROL(c) ((c) ^ 0x40)
 
 /* Supported actions */