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-rw-r--r--butl/path4
1 files changed, 3 insertions, 1 deletions
diff --git a/butl/path b/butl/path
index 451600c..af01d05 100644
--- a/butl/path
+++ b/butl/path
@@ -343,7 +343,9 @@ namespace butl
basic_path
base () const;
- // Return the extension or NULL if not present.
+ // Return the extension or NULL if not present. If not NULL, then
+ // the result points to the character past the dot but it is legal
+ // to decrement it once to obtain the value with the dot.
//
const C*
extension () const;