clang-format: Use IncludeBlocks::Regroup

.clang-format

@@ -12,6 +12,21 @@ BreakBeforeBraces: Allman
 ColumnLimit: 0
 ContinuationIndentWidth: 2
 Cpp11BracedListStyle: false
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex: '"config\.h"'
+    Priority: -1
+    CaseSensitive: true
+  - Regex: '"[^/]*"'
+    Priority: 0
+    SortPriority: 1
+    CaseSensitive: true
+  - Regex: '".*"'
+    Priority: 2
+    CaseSensitive: true
+  - Regex: '<.*>'
+    Priority: 3
+    CaseSensitive: true
 IndentCaseLabels: true
 InsertNewlineAtEOF: true
 KeepEmptyLinesAtTheStartOfBlocks: false

src/task-manager-bsd.c

@@ -40,6 +40,7 @@
 /* for struct vmtotal */
 #include <sys/vmmeter.h>
 
+/* errno */
 #include <errno.h>
 extern int errno;
 

src/task-manager.c

@@ -18,6 +18,7 @@
 
 #ifdef HAVE_WNCK
 #include "app-manager.h"
+
 #include <gdk/gdkx.h>
 #endif