Index: tool/spaceanal.tcl
==================================================================
--- tool/spaceanal.tcl
+++ tool/spaceanal.tcl
@@ -41,10 +41,29 @@
 set true_file_size [file size $file_to_analyze]
 if {$true_file_size<512} {
   puts stderr "Empty or malformed database: $file_to_analyze"
   exit 1
 }
+
+# Compute the total file size assuming test_multiplexor is being used.
+# Assume that SQLITE_ENABLE_8_3_NAMES might be enabled
+#
+set extension [file extension $file_to_analyze]
+set pattern $file_to_analyze
+append pattern {[0-9][0-9]}
+foreach f [glob -nocomplain $pattern] {
+  incr true_file_size [file size $f]
+  set extension {}
+}
+if {[string length $extension]>=2 && [string length $extension]<=4} {
+  set pattern [file rootname $file_to_analyze]
+  append pattern [string range $extension 0 1]
+  append pattern {[0-9][0-9]}
+  foreach f [glob -nocomplain $pattern] {
+    incr true_file_size [file size $f]
+  }
+}
 
 # Open the database
 #
 sqlite3 db $file_to_analyze
 register_dbstat_vtab db