The user will understand that changing the state of the terminal
while inputting data into nano is not the same as changing this
state before nano has started or after nano has exited.
This fixes https://savannah.gnu.org/bugs/?56394.
Bug existed since version 2.4.2.
Either this enabling is not needed at all when the original terminal
state has been restored, or it will be needed in the tiny version too.
Also condense some comments.
If the rest of nano is correct, then these checks are superfluous and
only slow the loops down. But if there is some incorrect code, then
let nano crash on dereferencing NULL so we can find and fix the bug.
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.
The 'quiet' parameter is only used when opening a help-text tempfile
or a spell-checked tempfile, and these files necessarily exist, so
'quiet' will never be checked for them. But in the weird case that
the help-text tempfile could not be opened, it is not a problem that
"New File" gets printed to the status bar because nano will crash
shortly afterwards. And when the spell-checked tempfile could not
be opened, a "Not Found" message is appropriate, but nano will crash
in this case too.
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?
Use printf's ability to align things (instead of trying to do it
ourselves and failing when the tab size of the terminal is not 8.)
Suggested-by: Vincent Huisman <site.gentoobugzilla@dataghost.com>
This fixes https://savannah.gnu.org/bugs/?56372.
Reported-by: Vincent Huisman <site.gentoobugzilla@dataghost.com>
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.
When parsing an included syntax file, stop reading when a command other
than 'syntax', 'header' or 'magic' is encountered. The syntax file is
fully parsed the first time that a file needs it. Each 'extendsyntax'
command is stored for unloaded syntaxes and applied after the syntax
is loaded.
Closing a buffer does not unload the syntax, even if no longer used by
another buffer.
This addresses https://savannah.gnu.org/bugs/?54928.
Signed-off-by: Brand Huntsman <alpha@qzx.com>
This is needed to implement the demand loading of syntax files, as any
errors that these files may contain would otherwise overwrite things on
the screen and the messages wouldn't be on the terminal when nano exits.
It also allows nano to start up on a Linux console when there are errors.
Signed-off-by: Brand Huntsman <alpha@qzx.com>
When the data is fed to nano through a pipe, it is pointless to print
this message as it can be seen only after nano has exited.
This addresses https://savannah.gnu.org/bugs/?56348.
The blank filename should not give any match, but maybe the header line
or the magic finds a fitting syntax.
This fixes https://savannah.gnu.org/bugs/?56344.
Trying to append does not work on a fifo, and we'd like to be able to
open a fifo again. Also, the append test causes a close event for the
given file at the moment of opening it, which makes using 'inotify' for
waiting for this file to be closed useless.
Commit f8f90272 added the append test, but the original request
(https://lists.gnu.org/archive/html/info-nano/2009-05/msg00000.html
by Damien Joldersma) asked only for a warning when the user did not
have enough privileges to write to the file.
So, drop the append test and just check the access bits.
This fixes https://bugs.debian.org/583196
and fixes https://savannah.gnu.org/bugs/?29312.
The original requests (https://bugs.debian.org/551717 by Paul Wise,
and https://savannah.gnu.org/bugs/?45383 by Mike Frysinger) asked
only that specifying a directory instead of a file name should not
open a new buffer. But commit 98ffb642 excluded everything that was
not a normal file. This avoids a hang when the user accidentally
tries to open a pipe or a socket, but also prevents any user from
doing so on purpose. And opening a fifo can be useful when wanting
to handle sensitive data that shouldn't be stored on disk.
This prepares the fix for https://bugs.debian.org/583196.
When wanting to exit after having modified a buffer by mistake, I don't
want to politely answer a question by typing precisely an unmodified N,
I want to give a command: ^N, meaning *No!*. Or seen another way: I
don't want to be obliged to let go of the Ctrl key before typing N.
When at startup --tempfile was used, the user can discard a modified
buffer with ^O ^Q. It would be nice when (without --tempfile) ^X ^Q
would work too.
Also, compute the required space for the keystrokes more tightly:
most of those characters are plain ASCII, so that means 17 bytes
for 17 cells, and at most one of those characters is a three-byte
arrow, which means 2 bytes extra. Adding the two newlines at the
end, the needed room besides the description is 21 bytes.
Fall back to using the words "Left", "Right", "Up", and "Down",
instead of graphical arrows.
This fixes https://savannah.gnu.org/bugs/?56313.
Bug was left to exist since the Alt+arrow keys were introduced,
in version 2.8.7, commit 1cc030f7.
Benno Schulenberg