Add optional goto line number to command line load filename

src/toolsrc/ed.pla

@@ -430,6 +430,7 @@ def readtxt(filename, startline)#0
             numlines++
         fin
     fin
+    putln
 end
 def writetxt(filename)#0
     byte txtbuf[81], refnum
@@ -456,6 +457,7 @@ def writetxt(filename)#0
         if !(i & $0F); putc('.'); fin
     next
     fileio:close(refnum)
+    putln
 end
 //
 // Screen routines
@@ -1713,6 +1715,14 @@ if ^arg
     strcpy(@filename, arg)
     puts(@filename)
     readtxt(@filename, 0)
+    arg = argNext(arg)
+    if ^arg
+        cursrow = strtonum(arg)
+        if cursrow
+            curshpos(0)
+            cursvpos(cursrow - 1)
+        fin
+    fin
 fin
 curschr  = '+'
 flags    = flags | insmode | gutter