Bug Fixes

A number of bug fixes implemented in Version 20.0 may change the way that existing code operates and are therefore documented in this section.

• When APL_COMPLEX_AS_V12 is set, the circular functions (X○Y) with (|X)>7, generate DOMAIN ERROR if the result would be complex.
• Previously, if GetTextSize was given an invalid font name it would use the default for the window that the method was invoked in. Now, invalid font names correctly generate DOMAIN ERROR.
• ⎕FMT using the E qualifier now behaves as intended.

         'E13.6' ⎕FMT ¯4.56789E¯12 ¯4.56789E¯123 ⍝ previous
   ¯4.56789E¯12
   ¯4.5678E¯123
  
         'E13.6' ⎕FMT ¯4.56789E¯12 ¯4.56789E¯123 ⍝ new
  ¯4.56789E¯12
  ¯4.56789E¯123  ⍝ NEW - note alignment of the 'E's!
  
  ⍝ Old behaviour - note ¯1.234 printed as ¯1.23
  ⍝ despite 4 digits requested
  

          '|',('E12.4' ⎕FMT ¯1.234E¯123),'|'
  |  ¯1.23E¯123|
  
  ⍝ NEW behaviour - honour request for 4 digits
          '|',('E12.4' ⎕FMT ¯1.234E¯123),'|'
  | ¯1.234E¯123|
  
  ⍝ Honouring request can now prevent fitting!
  
          '|',('E10.4' ⎕FMT ¯1.234E¯123),'|'  ⍝ Old
  |¯1.23E¯123|
  
          '|',('E10.4' ⎕FMT ¯1.234E¯123),'|'  ⍝ NEW
  |**********|