At least since version 229 of xterm (from August 2007), the escape
sequences for F1 to F4 have been "Esc O P" to "Esc O S". There is
no bracket in those sequences, and there probably never was -- most
likely the extra "[" in nano's code was a slip of the fingers.
With --stateflags (short form: -%) or 'set stateflags', nano reserves
the righthand end of the title bar not for showing "Modified" but for
showing the state of auto-indentation (I), the mark (M), the breaking
of long lines (L), macro recording (R), and softwrapping (S).
When the buffer is modified, this is indicated with a star (*) after
the file name (shown in the center of the title bar).
This fulfills https://savannah.gnu.org/bugs/?57953.
Requested-by: Sébastien Desreux <seb@h-k.fr>
When nano reports "Unbound key" or "Unknown sequence", this message
should stay onscreen only for the relevant keystroke, not for any
succeeding keystroke.
This addresses https://savannah.gnu.org/bugs/?59119.
Bug existed since before version 2.0.6.
Slang fails to translate the longer sequences, and then truncates
these sequences to just four bytes, effectively destroying them.
Therefore, when built with --with-slang, always activate --raw-sequences.
This avoids https://savannah.gnu.org/bugs/?49771.
Bug was visible since version 2.5.0, since bindings
for Ctrl+Left/Ctrl+Right were added.
The cursor would disappear after any message on the status bar --
for example, also when M-W is typed and nothing is found -- so the
mitigation trick needs to be performed in statusline() itself.
This addresses https://savannah.gnu.org/bugs/?59091.
For some reason, when running a tiny nano built with Slang on the bterm
of a Debian installer image, the cursor disappears when certain things
are written to the status bar. Make the cursor reappear by rewriting
the two help lines with dummy items (and then rewriting it again with
the normal menu in the central loop). Of course, this does not help
when the user uses -x or --nohelp to suppress the help lines, but at
least in the default setup the cursor doesn't get hidden now and then.
This mitigates https://savannah.gnu.org/bugs/?59091.
Bug existed since before version 2.2.4.
Instead of stuffing 0x91 into the input stream, use 0xFF when built
with Slang -- the same code that Slang itself produces when resuming
from an externally induced suspension. This byte is ignored.
In a UTF-8 locale, it should be safe to ignore the byte 0xFF coming
from the keyboard, as no valid UTF-8 sequence can contain 0xFF.
In an ISO8859 locale, this change prevents ÿ from being typed on the
keyboard -- it can still be entered with <Esc> <Esc> 255, though.
My apologies to the people of Pierre Louÿs and L'Haÿ-les-Roses.
Those casts are redundant, and sometimes ugly. And as the types of
variables are extremely unlikely to change any more at this point,
the protection they offer against miscompilations is moot.
Signed-off-by: Hussam al-Homsi <sawuare@gmail.com>
When keypad() is set to FALSE, like for verbatim input, ncurses is
not waiting its fifty milliseconds after an ESC to see if another
code will follow it, so nano itself will have to pause a little.
Otherwise 'solitary' could get set to TRUE when in fact the ESC
is followed very closely by another code.
This fixes https://savannah.gnu.org/bugs/?58955.
Bug existed since version 2.6.2, commit f2150d3f.
Also when each character is just one byte, parse_verbatim_kbinput()
can produce two bytes; plus the terminating NUL that is three bytes.
This fixes https://savannah.gnu.org/bugs/?58959.
Bug existed since version 4.9, commit 03d296eb.
This will not work for the deviant escape sequences for F1 to F5
on the Linux console nor for Alt+arrow on urxvt and such, but...
I can't be bothered to handle those too.
This fixes https://savannah.gnu.org/bugs/?58929.
Bug existed since commit be203832 from earlier today.
During verbatim input at most four integers are produced (the longest
possible unicode sequence), so use the value 999 to indicate a special
condition (a screen resize) that should not enter anything into the
buffer AND should not produce any error message or beep.
This fixes https://savannah.gnu.org/bugs/?58923.
Bug existed since version 5.0, commit 5899181a.
When Unicode Input has started (by typing 0 or 1 at the Verbatim Input
"prompt"), and something is typed that is not a hexadecimal digit, then
don't try to enter this character into the buffer but simply report it
as invalid and ignore it. Because most likely the user mistyped and
actually meant to enter a valid hex digit.
This fixes https://savannah.gnu.org/bugs/?58927.
The bug was old -- it existed since at least version 2.0.6.
The correct sequences begin with "Esc [" instead. I cannot find in the
histories of VTE and Gnome Terminal when these sequences were corrected.
Also exclude a bug check from the tiny version.
When we get an ESC from the keyboard, it might be the start of an
escape sequence, but the keyboard routines will need a little time
(tens of microseconds, probably) to get these codes to ncurses.
So, when doing verbatim input, pause a moment after an ESC.
This completes the fix for https://savannah.gnu.org/bugs/?58909.
Always interpret ESC followed by BS or DEL as <Alt+Backspace>.
This fixes https://savannah.gnu.org/bugs/?58910.
Bug existed since commit 40b03162 from one week ago,
since M-Bsp was hard-bound to deleting a word backwards.
(This could lead to unwanted behavior when the user wants to enter
a literal escape character (0x1B) while the input is somehow getting
stalled, because then a command keystroke after the M-V <Esc> would
get inserted verbatim too, instead of getting acted upon. But that
is a small price to pay for getting the correct behavior for both
M-V M-Bsp and M-V M-Enter.)
This fixes https://savannah.gnu.org/bugs/?58909.
Bug existed since version 2.6.3, commit 08c51cfd,
but also occurred erratically beforehand.
Benno Schulenberg