Undo will now remove up to 20 characters typed consecutively, just
like Emacs normally does. We need a special implementation for this
because Org has its own self-insert command.
The code for doing this is a patch by Martin Pohlack.
Formulas can now refer to fields and regions in other tables, be it in
the same file or even in different files.
This also opens the door for more interesting R support, because
arbitrary tables in a file can now be accessed with appropriate
commands.
Finally, this commit also introduces a convenience for creating
references in tables. For the purpose of references, it will always
be *assumed* that there is another hline at the end if each table. So
for example in a table that has only a single hline, to separate
header from data, you can now access all of column two with
"@I$2..@II$2".
In a recent patch we have introduced names for all fields in the last
row. This has lead to a bug, that Org thinks there might be a field
formula associated with those fields. Now we check if there really is
one, and only in this case ask to overwrite it with a column formula.
Report by Henry Atting.
After the failed implementation of `@0' as a reference for the last
line, this is a second attempt to provide such references. I would
have liked to allow `@last' as the reference, that would have been
beautiful. However, too many regular expressions directly search for
`@' followed by a number, so this is too hard to implement.
Therefore, I am now turning the last row into a row of implicitly
named fields. From now on, $LR1, $LR2,... can be used to refer to
fields in the last row. These names may also appear on the left hand
side of formulas.