Commit Graph

8579 Commits

Author SHA1 Message Date
Benno Schulenberg
d141e849a3 tweaks: unabbreviate "argument" in the documentation
Also, show that the argument in the extendsyntax format is not optional,
as any command requires at least one argument.  Also mention 'tabgives'
among the commands that are allowed in an included file.
2020-02-04 12:23:58 +01:00
Benno Schulenberg
da68ee19e7 tweaks: reorder two symbols 2020-02-04 11:41:05 +01:00
Benno Schulenberg
8b2f7bd5a2 tweaks: drop a message that will never be seen
Since the previous commit, nano exits from curses mode soon after
this message is printed, so that the user does not have any time
to read it or even see it.
2020-02-03 19:59:58 +01:00
Benno Schulenberg
6119756347 speller: avoid messing up the screen when an unknown locale is used
When invoking the "internal" speller, leave curses mode while the three
programs in the pipe array are executing, to prevent 'hunspell' from
writing a long error message to the end of the status bar, making the
screen scroll, and thus messing it up.  Now the error message gets
printed to the screen that nano was started up from, and will thus be
visible when the user exits from nano.  (At least: it will be so on a
terminal emulator -- on a VT, nothing will be seen.)

This fixes https://savannah.gnu.org/bugs/?57728.

Bug existed since version 4.6, commit 4d77e0ad.
2020-02-03 13:50:33 +01:00
Benno Schulenberg
06c80b6ccd tweaks: rearrange a few global variables, to group things better 2020-02-02 17:05:06 +01:00
Benno Schulenberg
7ce1f6d86d locking: when finding a lock file at startup, quit when user cancels
When at startup the user presses Cancel at the "open anyway?" prompt,
cancel the whole startup: quit.  But when the user answers No, just
skip the file and continue starting up.
2020-02-02 13:00:37 +01:00
Benno Schulenberg
88087f2b2f tweaks: move a function to related ones, and after one that it calls 2020-02-02 12:26:33 +01:00
Benno Schulenberg
16c4f5bbd0 tweaks: move a function to be before the ones that call it 2020-02-02 12:21:28 +01:00
Benno Schulenberg
e877c2406e tweaks: allocate the lock data only when ready to write them 2020-02-02 12:05:45 +01:00
Benno Schulenberg
b6a1583e8e tweaks: take just one shot at reading the lock file, and correct a type
Don't bother looping until the 1024 bytes are read.  Writing the lock
file takes just one shot too, and that is more important to get right.

Also, correct the type for the result of read(), so that -1 doesn't
get turned into a positive number, which would mean that any error
would get ignored.
2020-02-02 11:41:20 +01:00
Benno Schulenberg
48df800db3 tweaks: rewrite the same file name into the lock file as the first time
It would be better if nano wrote the full filename into the lock file,
because that would be clearer when Vim displays its warning, but...
this is faster and will do for now.

(Nano should simply also store the full filename in the openfile struct,
so that get_full_path() needs to be called just once for each file.)

This addresses https://savannah.gnu.org/bugs/?57713.
2020-02-02 11:22:22 +01:00
Benno Schulenberg
ee05daab92 tweaks: do not leak a file descriptor when fdopen() fails 2020-02-02 11:08:59 +01:00
Benno Schulenberg
74f4c37d5f locking: avoid crashing when there is a problem writing the lock file
The call of ferror() as parameter of a %s specifier was a mistake --
it returns a number, not a string.  Avoid the problem by combining
two error checks.

The man page of fwrite() does not say anything about errno, but I guess
that the function calls write() and that the possible error numbers of
that function apply.

In theory it is now possible that fclose() fails and returns an error
that then masks an earlier error of fwrite().  But I can't be bothered:
lock files are not essential, and any errors that might occur are most
likely overlooked anyway because they are not displayed in red.

This fixes https://savannah.gnu.org/bugs/?57724.

Bug existed since lock files were introduced, in version 2.3.2,
commit bf88d27a.
2020-02-02 10:55:19 +01:00
Benno Schulenberg
3f5ba950d6 tweaks: suggest a few more alternative key bindings and unbindings
This demonstrates the presence of the 'savefile' function,
and makes the main help text look better.
2020-01-31 17:16:31 +01:00
Benno Schulenberg
0a52e92d4c docs: for the alternative bindings, rebind ^C only in the main menu
Because ^C is needed for Cancel in most other menus.

This fixes https://bugs.debian.org/950223.
Reported-by: Jonas Smedegaard <dr@jones.dk>

Bug existed since version 4.0, commit 3a170d2c.
2020-01-31 16:54:55 +01:00
Benno Schulenberg
7c57806c6f rcfile: require "bright", "start=", and "end=" to be in lowercase too 2020-01-31 16:11:38 +01:00
Benno Schulenberg
a2f8703df5 tweaks: tumble three conditions, for consistency in comparisons 2020-01-31 16:05:51 +01:00
Benno Schulenberg
073251fdb1 tweaks: condense two comments, and reshuffle an #endif
There is no need to fake success when the whole writing of the lock file
is skipped, because also a zero return value means "continue anyway".
2020-01-31 11:39:11 +01:00
Benno Schulenberg
5a0ee3c2f9 tweaks: harmonize the amount of lock data that we read and write
All the things that we need are located within the first 68 bytes of
the .swp file.  We do write byte 1007 when the file is modified, but
we never reference it.  We always wrote just 1024 bytes to the .swp
file, so it makes no sense to read in any more than that.

(Vim writes 4096 bytes to a .swp at first, before adding undo stuff
four seconds later.  But the 1024 bytes appear to be enough for Vim
to recognize it as a lock file.)
2020-01-31 11:06:11 +01:00
Benno Schulenberg
6bd5dce954 tweaks: ensure that editor name and user name are NUL terminated
When copying those pieces from a lock file, it is not certain that
they end with a NUL character.
2020-01-30 20:00:17 +01:00
Benno Schulenberg
f25059c244 tweaks: frob a couple of indentations and white lines 2020-01-30 19:55:26 +01:00
Benno Schulenberg
856f2c433e feedback: ask a clearer question when a valid lock file is encountered
When asking "continue?", I always thought that answering No would mean
that nano would not continue, that it would stop, that it would abort.
But No only means that it will not open the relevant file but continues
anyway to start up.  Asking "open anyway?" is more easily understood in
that way.
2020-01-30 19:44:25 +01:00
Benno Schulenberg
38c5a4465b tweaks: reshuffle some assignments for a return value 2020-01-30 19:43:19 +01:00
Benno Schulenberg
f494bfcbb9 locking: when a lock file is unreadable, open the file itself anyway
Unreadable or corrupt lock files are not a user error nor user intent,
so they should not keep the user from editing the corresponding file.

Also, combine some error conditions to compact the code.

This addresses https://savannah.gnu.org/bugs/?57700.
2020-01-30 19:10:34 +01:00
Benno Schulenberg
b856fc4664 locking: check two magic bytes, to verify that it is a lock file
Also, when the check fails, then nano should continue and simply
open the file, just like Vim.

This fixes https://savannah.gnu.org/bugs/?57698.
2020-01-30 18:48:35 +01:00
Benno Schulenberg
faa96ead44 tweaks: correct the description of what nano writes into the lock file
Also, limit the stored program's name to ten bytes.  Vim uses four for
its name plus a space, and a maximum of six for its version number.
2020-01-30 17:44:04 +01:00
Benno Schulenberg
26444bf8df tweaks: reformat a comment, and resuffle a line to match byte order 2020-01-30 15:55:42 +01:00
Benno Schulenberg
4eaade2938 gnulib: update to its current upstream state 2020-01-29 19:48:15 +01:00
Benno Schulenberg
662e8b2d20 tweaks: remove some superfluous conditions for rewriting a lock file
A lock file needs to be rewritten (with the modified flag) only when the
relevant lock file already exists.  All other conditions are redundant.
2020-01-29 19:38:07 +01:00
Benno Schulenberg
4502295a34 locking: do not write a lock file when in view mode
When in view mode, the file cannot be edited, so there is no need to
warn anyone (through a lock file) that the file might soon change.

This fixes https://savannah.gnu.org/bugs/?57694.
2020-01-29 19:14:41 +01:00
Benno Schulenberg
25b0bf0ae8 tweaks: correct a couple of comments about escape sequences 2020-01-29 18:48:03 +01:00
Benno Schulenberg
f6b6bc47d6 tweaks: remove a redundant call, as there is nothing to free there
At that point, 'u->cutbuffer' will always be NULL, either from the
original creation of the INSERT undo item, or by having been freed
and set to NULL by do_redo().
2020-01-29 12:33:55 +01:00
Benno Schulenberg
a692b01c04 tweaks: reshuffle two lines, to do the linking first, then the content 2020-01-29 12:33:30 +01:00
Benno Schulenberg
a197ccf12d tweaks: move another function, to group the deleting ones together 2020-01-29 12:16:09 +01:00
Benno Schulenberg
67e5913edf tweaks: move another function to before the one that calls it 2020-01-29 10:54:30 +01:00
Benno Schulenberg
e864107046 tweaks: move a function to right before the one that calls it 2020-01-29 10:53:05 +01:00
Benno Schulenberg
7984ea4eb6 tweaks: remove two superfluous assignments, and rename a variable
The 'prev' and 'next' links get assigned to immediately after the
call of copy_node().  And anyway, it does not make sense to link
a copied node to the predecessor and successor of its original.

Also slightly regroup some lines.
2020-01-29 10:47:09 +01:00
Benno Schulenberg
f38bd5030d tweaks: add a little change that was overlooked in the previous commit
Option --showcursor applies also to the help viewer, which means that
it can do something useful in restricted mode too.
2020-01-28 12:00:05 +01:00
Benno Schulenberg
a2fea9928d build: exclude option '-g' when configured without browser and help 2020-01-28 10:33:56 +01:00
Benno Schulenberg
c64f506933 tweaks: reshuffle some declarations, and expand a few variable names 2020-01-28 10:21:34 +01:00
Benno Schulenberg
445cd2a6c5 usage: improve the description of --restricted and --quickblank
Give a little more information than just a rehash of the long option.
2020-01-28 10:04:01 +01:00
Benno Schulenberg
fb073ec88d display: ensure the guiding stripe can be shown when not softwrapping
This fixes https://savannah.gnu.org/bugs/?57683.

Bug existed since commit 0b54785f from yesterday.
2020-01-28 09:35:45 +01:00
Benno Schulenberg
c09e96f294 suspension: put in an extra terminal-initialization call for Slang
Also, the disabling of the keyboard interrupt (SIGINT) must happen
after that initialization call, otherwise ^C will still do nothing
after returning from suspension (when nano is built against Slang).

This fixes https://savannah.gnu.org/bugs/?57656.

Bug existed since version 2.2.0, commit daaf468c.
2020-01-27 16:46:01 +01:00
Benno Schulenberg
0b54785fe5 softwrap: suppress the guiding stripe on unaffected chunks
When the guiding stripe (when softwrapping) will be shown in
a later chunk, it shouldn't be shown in the current chunk.

This fixes https://savannah.gnu.org/bugs/?57654.

Bug existed since --guidestripe was introduced, in version 4.0.
2020-01-27 15:46:57 +01:00
Benno Schulenberg
8835c0d486 tweaks: reduce the scope of a variable, and reshuffle a declaration 2020-01-27 13:36:28 +01:00
Benno Schulenberg
0442eef95b tweaks: elide a somewhat costly call by remembering some state
When having prepared a line for displaying on the screen, nano already
determind whether the line extends beyond the right edge or not.  There
is no need to calculate again the full width of the current line later.
Just let display_string() make a note whether the piece of text that
it converted to displayable form still has more text coming after it,
and use this note when it's time to show the ">" continuation sign.

Using a static variable is ugly, but passing it along as a parameter
would be even uglier, because for all other calls of display_string()
the parameter would be just a useless burden.
2020-01-27 13:23:56 +01:00
Benno Schulenberg
6ae11071b3 tweaks: add an error message for something that should never occur 2020-01-27 12:06:27 +01:00
Benno Schulenberg
3c177c1bb9 tweaks: elide a variable, and rename its sister 2020-01-26 19:23:37 +01:00
Benno Schulenberg
e0213b1a41 tweaks: drop a pointless suffix from two function names 2020-01-26 16:36:23 +01:00
Benno Schulenberg
e70ff87c86 tweaks: move another function to after the one that it calls
(The diff is stupid.  It should just remove 440 contiguous lines, and
add back 440 contiguous lines further down.  Instead it tries to find
similarities between what is moved and what remains, and makes a mess.
You have to use --patience or --minimal to get the better diff.)
2020-01-26 16:21:21 +01:00