refactor: string extend method

meson.build

@@ -1,26 +1,26 @@
-project(
-  'testlib',
-  'c',
-  version: '0.1',
-  default_options: ['c_std=c17'],
-)
-
-src = files(
-  'hashmap/myhashmap.c',
-  'queue/myqueue.c',
-  'string/mystring.c',
-)
-
-testlib = files(
-  'test/test.c',
-  'test/hashmap/hm1.c',
-  'test/queue/q1.c',
-  'test/string/str1.c',
-  'test/string/str2.c',
-)
-
-sources = src + testlib
-
-inc_dir = include_directories('string', 'queue', 'hashmap')
-
-executable('testlib', sources, include_directories: inc_dir)
+project(
+  'testlib',
+  'c',
+  version: '0.1',
+  default_options: ['c_std=c17'],
+)
+
+src = files(
+  'hashmap/myhashmap.c',
+  'queue/myqueue.c',
+  'string/mystring.c',
+)
+
+testlib = files(
+  'test/test.c',
+  'test/hashmap/hm1.c',
+  'test/queue/q1.c',
+  'test/string/str1.c',
+  'test/string/str2.c',
+)
+
+sources = src + testlib
+
+inc_dir = include_directories('string', 'queue', 'hashmap')
+
+executable('testlib', sources, include_directories: inc_dir)