What’s New in Version 4.0

Version 4.0 contains the following enhancements:

1. Scroll margins at the top and bottom of the window are now supported. (The design was copied from tpu-extras.el.) By default, this feature is enabled with the top margin set to 10% of the window and the bottom margin set to 15% of the window. To change these settings, you can invoke the function edt-set-scroll-margins in your .emacs file. For example, the following line

   (edt-set-scroll-margins "20%" "25%")

   sets the top margin to 20% of the window and the bottom margin to 25% of the window. To disable this feature, set each margin to 0%. You can also invoke edt-set-scroll-margins interactively while EDT Emulation is active to change the settings for that session.

   Please note: Another way to set the scroll margins is to use the Emacs customization feature to set the following two variables directly: edt-top-scroll-margin and edt-bottom-scroll-margin.

   Enter the Emacs customize command. First select the ‘Editing’ group and then select the ‘Emulations’ group. Finally, select the ‘Edt’ group and follow the directions.

2. The ‘SUBS’ command is now supported and bound to GOLD-Enter by default. (This design was copied from tpu-edt.el.) Note, in earlier versions of EDT Emulation, GOLD-Enter was assigned to the Emacs function query-replace. The binding of query-replace has been moved to GOLD-/. If you prefer to restore query-replace to GOLD-Enter, then use an EDT user customization file, edt-user.el, to do this (see Customizing Emulation).

3. If you access a workstation using an X Server, observe that the initialization file generated by edt-mapper.el will now contain the name of the X Server vendor. This is a convenience for those who have access to their Unix account from more than one type of X Server. Since different X Servers typically require different EDT emulation initialization files, edt-mapper.el will now generate these different initialization files and save them with different names. Then, the correct initialization file for the particular X server in use is loaded correctly automatically.

4. Also, edt-mapper.el is now capable of binding an ASCII key sequence, providing the ASCII key sequence prefix is already known by Emacs to be a prefix. As a result of providing this support, some terminal/keyboard/window system configurations, which don’t have a complete set of sensible function key bindings built into Emacs in input-decode-map, can still be configured for use with EDT Emulation. (Note: In a few rare circumstances this does not work properly. In particular, it does not work if a subset of the leading ASCII characters in a key sequence are recognized by Emacs as having an existing binding. For example, if the keypad 7 (KP7) key generates the sequence ‘ESCOw’ and ‘ESCO’ is already bound to a function, pressing KP7 when told to do so by edt-mapper.el will result in edt-mapper.el incorrectly mapping ‘ESCO’ to KP7 and ‘w’ to KP8. If something like this happens to you, it is probably a bug in the support for your keyboard within Emacs or a bug in the Unix termcap/terminfo support for your terminal or a bug in the terminal emulation software you are using.)

5. The edt-quit function (bound to GOLD-q by default) has been modified to warn the user when file-related buffer modifications exist. It now cautions the user that those modifications will be lost if the user quits without saving those buffers.