X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ffs%2Futils.h;h=a52e37d8ed6f3321c748d5df793ce58c77b700e3;hb=c750a22da0df0b54af78374fd66ad1a055327e34;hp=df7bc76b8d5add12bae4cb3daae6cf4027d3a3a1;hpb=eeb6ed7b20d56578ff8c68f3c94e887d5ac768ee;p=libs%2Fcore.git

diff --git a/source/fs/utils.h b/source/fs/utils.h
index df7bc76..a52e37d 100644
--- a/source/fs/utils.h
+++ b/source/fs/utils.h
@@ -38,6 +38,9 @@ void rename(const Path &from, const Path &to);
 /// Makes a path relative to some base path.  That is, base/result==path.
 Path relative(const Path &path, const Path &base);
 
+/// Returns the longest prefix shared by both paths.
+Path common_ancestor(const Path &, const Path &);
+
 /** Determines how many levels a path is below another.  Returns -1 if path is
 not a descendant of parent. */
 int descendant_depth(const Path &path, const Path &parent);