[Dbappbuilder-relannounce] ANNOUNCE: Rel version 3.011 now available.

[Rel a. list. <dba...@li...>]

This release of Rel, an implementation of Date & Darwen's Tutorial D database language, improves the user interface and fixes some bugs.

The following enhancements have been made:

- Rel UI: Opening a relvar in Edit mode now positions the cursor in the blank row at the bottom, ready to enter a new tuple.  Cursor keys may be used to navigate, and Ctrl/Cmd-Cursor keys may be used to jump to top/bottom or right/left.

- Rel UI: Font scaling has been improved when using alternative output display on HiDPI Windows displays.

- Rel UI: The bundled Java runtime is now version 8u161.

- Rel DBMS: Using SAME_HEADING_AS(...) in a relation literal heading was previously not permitted. E.g., REL SAME_HEADING_AS(S) {} was a syntax error.  It is now permitted.
  
- Rel DBMS and Rel Client now check for and correctly handle 'null' source code.

The following bugs have been fixed:

- Rel UI: Cut/copy/paste/selectAll drop-down menus and keyboard shortcuts now work consistently and are generally available wherever they should appear.

- Rel DBMS: ABS(n) always returned a RATIONAL value, even if n was INTEGER. Fixed.

- Rel UI: 

  Given: Ubuntu 16.xx, 17.xx and other GTK3 environments.

  Result: Multiple GUI failures similar to those when using the
  Eclipse IDE under GTK3.

  Fixed. Startup forces GTK2. Some issues remain, but at least it's
  usable.

- Rel UI: 

  Given: In the relvar Edit mode, press "Go to INSERT row" button on
  relvar with high enough cardinality to require scrolling.
	
  Result: It was was supposed to do what Ctrl-End should also do:
  position the display on the blank row and put the cursor in it. It
  doesn't.
	
  Fixed. Ctrl-Cursor preferred over Ctrl-End.

- Rev:
	
  Given: Create an Expression and set its text to "WRITELN '&blah'".

  Result: The & won't show. If you change the text to "WRITELN
  '&&blah'", it shows &, but is treated as "WRITELN '&&blah'".  

  Fixed.
  			
- Rel DBMS:
	
  Given: https://reldb.org/forum/viewtopic.php?f=2&t=1527&p=2863#p2863 <https://reldb.org/forum/viewtopic.php?f=2&t=1527&p=2863#p2863>
	
  Result: Fatal error instead of semantic error.
	
  Fix: Now throws semantic error, plus gives a helpful hint for fixing
  a typical error.

- Rel DBMS:

  Given: S GROUP {blah} AS rva
	
  Result: Java NullPointerException due to undefined attribute 'blah'.
	
  Fixed.

For more information, or to download Rel, go to https://reldb.org <https://reldb.org/>