From 0af6d2e186b0ac5333da81a858055dd4468de326 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ji=C5=99=C3=AD=20Techet?= <techet@gmail.com>
Date: Wed, 12 Apr 2023 11:04:45 +0200
Subject: [PATCH] Make isIncludeFile() return TRUE for files with an unknown
 extension

---
 main/options.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/main/options.c b/main/options.c
index 3f6f3d1d64..0440faa9b5 100644
--- a/main/options.c
+++ b/main/options.c
@@ -131,6 +131,12 @@ static const char *const HeaderExtensions [] = {
 	"h", "H", "hh", "hpp", "hxx", "h++", "inc", "def", NULL
 };
 
+static const char *const SourceExtensions [] = {
+	"c", "c++", "cc", "cp", "cpp", "cxx", "C", "CPP", "CXX", NULL
+};
+
+static stringList* SourceExt;
+
 long ctags_debugLevel = 0L;
 bool ctags_verbose = false;
 
@@ -1142,7 +1148,9 @@ extern bool isIncludeFile (const char *const fileName)
 	const char *const extension = fileExtension (fileName);
 	if (Option.headerExt != NULL)
 		result = stringListExtensionMatched (Option.headerExt, extension);
-	return result;
+	if (result)
+		return true;
+	return !stringListExtensionMatched (SourceExt, extension);
 }
 
 /*
@@ -3856,6 +3864,7 @@ extern void initOptions (void)
 
 	verbose ("Setting option defaults\n");
 	installHeaderListDefaults ();
+	SourceExt = stringListNewFromArgv (SourceExtensions);
 	verbose ("  Installing default language mappings:\n");
 	installLanguageMapDefaults ();
 	verbose ("  Installing default language aliases:\n");
@@ -3935,6 +3944,7 @@ extern void freeOptionResources (void)
 	freeList (&Excluded);
 	freeList (&ExcludedException);
 	freeList (&Option.headerExt);
+	freeList (&SourceExt);
 	freeList (&Option.etagsInclude);
 
 	freeSearchPathList (&OptlibPathList);