Changeset 954 for trunk/tcl

Timestamp:

Mar 12, 2008 5:38:17 PM (16 years ago)

Author:

mmc

Message:

Fixed the test for "library isvalid" to avoid an error that Joe Ringgenberg
found: If a choice value had a word like "split", it was executed as a Tcl
command during the "library isvalid" test to see if it responded as a
LibraryObj? object. If so, then it would be grafted on as a tree; otherwise,
it is put as a single text element. With any other text, this test would
fail. But "split" is a command and does not fail, but produces a non-boolean
result and causes another error. It's fixed now to look at the command
name and make sure that it at least looks like libraryObj##.

File:

• trunk/tcl/scripts/library.tcl (modified) (1 diff)

trunk/tcl/scripts/library.tcl

@@ -41 +41 @@
         }
         set obj [lindex $args 1]
-        if {[catch {$obj isa ::Rappture::LibraryObj} valid] == 0 && $valid} {
+        #
+        # BE CAREFUL with the object test:
+        # The command should look like a LibraryObj formed by #auto.
+        # We want to avoid things like "split" or "set", which are
+        # valid Tcl commands but won't respond well to isa.
+        #
+        if {[regexp {libraryObj[0-9]+$} $obj]
+              && [catch {$obj isa ::Rappture::LibraryObj} valid] == 0
+              && $valid} {
             return 1
         }