Fixed fetching algorithm

tiifetch.tcl

@@ -176,6 +176,17 @@ proc writefileln {fname data} {
   close $fp
 }
 
+# list comparison helper (listcomp $new $old)
+proc listcomp {a b} {
+  set diff {}
+  foreach i $a {
+    if {[lsearch -exact $b $i]==-1} {
+      lappend diff $i
+    }
+  }
+  return $diff
+}
+
 # main logic proc
 proc fetchiidb {url echos dbdir dolog} {
   # trim the parameters 
@@ -232,9 +243,7 @@ proc fetchiidb {url echos dbdir dolog} {
       set oldmsgids [lmap s [split [readfile $echofile] "\n"] {string trim $s}]
     }
     # pre-filter the new message IDs to fetch
-    set newmsgids [concat $oldmsgids $msgids] 
-    foreach e $newmsgids {dict set tmp $e 1}
-    set newmsgids [dict keys $tmp]
+    set newmsgids [listcomp $msgids $oldmsgids] 
     # save the echo index file with all message IDs
     writefileln $echofile [join $msgids "\n"]
     if {$dolog eq 1} {puts "Fetching [llength $newmsgids] new messages from $echoname..."}

tiix.tcl

@@ -211,10 +211,9 @@ proc tiix_fetchecho {echoname} {
     }
   }
   global tiix_status localdbdir
-  set prev_status $tiix_status
   set tiix_status "Fetching echo contents..."
   massfetch $echoname $localdbdir 0
-  set tiix_status $prev_status
+  set tiix_status Ready
 }
 
 proc errmsg {msg} {