Index: openacs-4/packages/acs-tcl/tcl/install-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/install-procs.tcl,v
diff -u -N -r1.35.2.4 -r1.35.2.5
--- openacs-4/packages/acs-tcl/tcl/install-procs.tcl	27 Sep 2020 17:56:56 -0000	1.35.2.4
+++ openacs-4/packages/acs-tcl/tcl/install-procs.tcl	1 Feb 2021 10:51:09 -0000	1.35.2.5
@@ -113,7 +113,7 @@
     set out [list]
 
     # Remove double slashes
-    regsub -all {//} $mount_point "/" mount_point
+    regsub -all -- {//} $mount_point "/" mount_point
     set mount_point [string trim $mount_point " /"]
 
     if {[string is space $mount_point] || $mount_point eq "/"} {
@@ -197,7 +197,7 @@
     set out [list]
 
     # Remove double slashes
-    regsub -all {//} $mount_point "/" mount_point
+    regsub -all -- {//} $mount_point "/" mount_point
     set mount_point [string trim $mount_point " /"]
 
     if {[string is space $mount_point] || $mount_point eq "/"} {
@@ -1038,7 +1038,7 @@
     }
 
     # Remove double slashes
-    regsub -all {//} $url "/" url
+    regsub -all -- {//} $url "/" url
 
     if { $package_key ne "" && $url ne "" } {
         error "set-parameter: Can't specify both package and url for $url and $package_key"