[Bug 12210] New: Copy/ paste corruption in The Elder Scrolls Construction Set

http://bugs.winehq.org/show_bug.cgi?id=12210

Summary: Copy/paste corruption in The Elder Scrolls Construction
                    Set
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: richedit
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=11632)
 --> (http://bugs.winehq.org/attachment.cgi?id=11632)
Wine output of bug in action

Pasting text -- to be exact, copying a pre-written script from a text editor,
and pasting it over an existing script with Ctrl+A, Ctrl+V -- from a Linux app
into the script editor in The Elder Scrolls Construction Set v1.6.1820
(Morrowind: Bloodmoon) causes random corruption at the end of the text buffer;
the final line of any script will read:

End Script_Foo

But when corruption occurs, the final line will read something like:

End Script_Foor

or

End Script_Foo< au
> 3

When this occurs, if the extra characters do not span a new line, it appears
you can simply delete them without too much trouble, and save the script.
(Note, saving the script commits the compiled script to the editor memory, this
is different from saving the plugin being modified to disk)

However, if the characters span to a new line, deleting the newline will cause
the last line of the script to jump down, accompanied by various render
artifacts in the script edit window. I have not tried to save a script after
this occurs.

If you reload the script (answering "no" to the save prompt), it may or may not
be possible to re-paste the text. If it is possible, the same or different
character data may appear appended to the pasted text -- if it reverts to no
appended characters, or appended characters not spanning a new line, it appears
one can save the script normally.

Occasionally (about 1/5 of the time), however, (usually after previously pasted
text included spurious newlines) the edit window will stop responding to
Ctrl+A/C/X commands, or pressing Ctrl+A will appear to partially highlight some
of the text in the window. In either case, the editor will usually crash in
short order.

If I highlight a segment of text in the middle of the script edit window with
the mouse or Shift+Arrows, and then copy/paste it in place, the editor crashes
immediately.