When the user is typing a long text and --breaklonglines is in effect,
then any leading comment or quoting characters are automatically added
to each automatic new line.
This fulfills https://savannah.gnu.org/bugs/?56042.
Requested-by: Sébastien Desreux <seb@h-k.fr>
Instead of calling in twenty places parse_mbchar(pointer, NULL, NULL),
use a simpler and faster char_length(pointer). This saves pushing two
unneeded parameters onto the stack, avoids two needless ifs, and elides
an intermediate variable.
Its main purpose will follow in a later commit: to speed up searching.
There is no need to make a copy of the line, because if there are some
bytes that are moved, they are always moved toward the left -- the line
can only shrink, never expand.
When squeezing excess spaces from a line has proved unsuccessful, we
have already copied all of its data, so it hardly makes a difference
whether we free the old or the new data. Choose to free always the
old data, so that we can simplify things.
There is no need to save, clear, and restore the mark when counting
words, lines and characters, because partitioning and unpartitioning
the buffer does not use the mark nor affect it.
Now M-D will report 0 lines instead of 1 line for an empty buffer, and
will match the output of 'wc --lines' as long the file is a POSIX file.
This fixes https://savannah.gnu.org/bugs/?56054.
Bug existed since before version 2.1.10.
For this one quick switch back and forth there is no need to report
anything on the status bar nor to update colors and such. In this
case, those things are just a waste of time.
No one ever reported seeing the message that was removed in commit
c039aaad one month ago, so most likely the code is correct and nano
never calls line_from_number() with a non-existent line number.
For both an integrated and an external spell check, fake the Shift key
being held so that (when the cursor is moved by a changed length of a
word) a Shift-selected region is not unexpectedly cancelled.
This fixes https://savannah.gnu.org/bugs/?56365.
Don't bother checking for an error from sigaction(), because the only
things it could error out for is when it is passed an invalid signal
(which SIGINT isn't) or oldaction/newaction would point to memory that
is outside of nano's control (which is obviously not the case).
Also, the setup of signal handlers during startup does not check for
errors, so why do it here?
If functions deeper down would put up some message on the status bar,
it should not be cleared. The chance that messages from a spell-check
program stay onscreen is minute: the edit window is fully refreshed,
the status bar is fully drawn, and the help lines (if there are any)
are redrawn. Only the title bar is not refreshed, but the chance that
an error message has spilled onto the top row... And anyway, the
spell checker should not print any error messages at all.
The integrated spell checker does not use regular expressions, and
'refresh_needed' is set to TRUE anyway, so the tidy_up_after_search()
call there is effectively a no-op.
The lines from the cutbuffer will be renumbered when it matters: when
they get pasted.
The only place that used the numbering of (a copy of) the cutbuffer
(the updating of an undo item) already iterates through its lines.
Just add a counter there instead of making use of the line numbers.
All extractions are done into the cutbuffer, so it is pointless to pass
'cutbuffer' and 'cutbottom' in and back out as parameters all the time.
Just use those global variables directly.
Also, rename the function as there is no longer a buffer among its
parameters.
The 'cutbottom' variable is only ever used when cutting or copying
consecutive lines: for appending the current line to the already
existing lines in the cutbuffer. As soon as some other operation
is performed, 'cutbottom' becomes irrelevant, it could be set to
anything, it doesn't matter: the pasting of the cutbuffer does not
use the value of 'cutbottom', nor does any other operation.
Avoiding this leak is more trouble than it's worth: invocation_error()
will be called seldomly, and when it is called, the user will probably
quickly exit from nano to fix things.
Also declare the speller functions as const again, so they don't give
the impression that their result can be freed.
Suggested-by: Brand Huntsman <alpha@qzx.com>
Now you can have a look elsewhere in the buffer (and even delete
or paste stuff there) and when you return to the original line
and continue typing, any spillover from automatic hard-wrapping
will spill over onto the same line it spilled over to before.
You can even switch to a different buffer and return and continue
typing, and stuff will still spill over to the same line.
In the bargain, this gets rid of a bit of flag-resetting code
that was run for many keystrokes, in most cases needlessly.
This addresses https://savannah.gnu.org/bugs/?56189.
Most of the returned error messages are fixed strings, not allocated
strings.
This fixes https://savannah.gnu.org/bugs/?56188.
Reported-by: Aliaksei Sakovets <alexeysakovets@gmail.com>
Bug existed since version 4.1, commit f645009a.
Benno Schulenberg