editorconfigGH-19 clarified laeding slash in the spec

index.rst

@@ -189,6 +189,9 @@ directory of ``.editorconfig`` or any other directory below one that stores this
 However, the glob ``subdir/*.c`` only matches files that end
 with ``.c`` in the ``subdir`` directory in the directory of ``.editorconfig``.
 
+Therefore, a leading slash is not relevant if there is already a slash in the middle of the pattern.
+Thus, the globs `/subdir/*.c` and `subdir/*.c` must yield the same result.
+
 As a corollary, a section name ending with ``/`` does not match any file.
 
 The backslash character (``\\``) can be used to escape a character so it is
@@ -417,3 +420,4 @@ this specification.
 .. _plugin-tests repository: https://github.com/editorconfig/editorconfig-plugin-tests
 .. _Semantic Versioning 2.0.0: https://semver.org/spec/v2.0.0.html
 .. _specification repository: https://github.com/editorconfig/specification
+.. _gitignore format: https://git-scm.com/docs/gitignore#_pattern_format