--- a/src/Pure/Admin/build_release.scala Thu May 04 12:15:50 2017 +0200
+++ b/src/Pure/Admin/build_release.scala Thu May 04 12:23:14 2017 +0200
@@ -55,7 +55,7 @@
val release_info =
{
val date = Date.now()
- val name = if (release_name != "") release_name else "Isabelle_" + Date.Format.date(date)
+ val name = proper_string_default(release_name, "Isabelle_" + Date.Format.date(date))
val dist_dir = base_dir + Path.explode("dist-" + name)
val dist_archive = dist_dir + Path.explode(name + ".tar.gz")
val dist_library_archive = dist_dir + Path.explode(name + "_library.tar.gz")