Now all remaining calls of measured_copy() have a "+ 1" in their
second argument, and can thus be simplified. And each of those
calls is followed by terminating the string with a NUL byte, so
thát can be pulled into the function.
The old address has become invalid, and probably does not have enough
room for the write, thus causing a crash.
This fixes https://savannah.gnu.org/bugs/?57858.
Bug existed since commit 8625609c from two days ago.
Not doing it characterwise saves a reallocation, a memmove(), several
checks, and an update_undo() for each character over one.
This has been tested by temporarily setting 'bracketed_paste = FALSE'
instead of 'bracketed_paste = TRUE' in convert_sequence() in winio.c,
and then pasting stuff into nano.
And before the buffer size is adjusted, so that the add_undo()
doesn't need to correct the stored former size of the buffer.
This will allow the injection of multiple characters at once,
in the next commit.
The SPLIT_BEGIN item gets tucked underneath the ADD item on the top of
the undo stack. Thus: that SPLIT_BEGIN item should copy the 'wassize'
of the ADD item instead of storing the current buffer size.
This fixes https://savannah.gnu.org/bugs/?57832.
Bug existed since the undo functionality was added, and existed
in this form since version 2.3.5, commit be10c2a4.
In theory this would allow injecting more than one character at a time
into the edit buffer. But the creation and updating of an undo item for
the addition or the deletion of a character are a bit strange. For all
other operations and add_undo() is called before the operation, and an
update_undo() afterward. But for an ADD, the add_undo() is called after
the operation, and for a DEL/BACK, the update_undo() is called before
the operation. There is some logic to that, but things would be easier
to understand if all operations were handled the same: an add_undo()
beforehand (when needed), and an update_undo() afterward.
When something is pasted or inserted onto the final, empty line of a
buffer, an automatic new magic line is created after it, when needed.
When this paste or insertion is undone, the added magic line should
also be removed again.
This fixes https://savannah.gnu.org/bugs/?57808.
Bug existed since the undo capabilities were added,
since before version 2.3.0.
When the user (unexpectedly) types a multibyte character after M-V,
put its first byte back into the keyboard buffer, so that the next
call of process_a_keystroke() will retrieve the byte sequence as a
whole, and will inject them as one character into the edit buffer.
This fixes https://savannah.gnu.org/bugs/?57804.
Bug existed since version 2.6.3, commit 08c51cfd.
Using straightforward comparisons is clearer and faster and shorter.
Again, note that this does not filter out 0x7F (DEL). But that is
okay, as that code will never be returned from get_kbinput().
The few calls of the injection routines that had 'filtering' set to
TRUE have already filtered out ASCII control codes earlier on. And
in the case of injecting a completion, this completion only contains
word-forming characters -- and if the user somehow added a control
code to the word-forming characters, then nano should NOT filter it
out, so in fact that setting of 'filtering' to TRUE was mistaken.
Note that this filtering did not filter out 0x7F (DEL). But that is
fine: it should not occur in the input stream at that point anyway,
as it gets translated to either KEY_DC or KEY_BACKSPACE earlier in
the keyboard parsing routines.
Benno Schulenberg