Commit Graph

6663 Commits (69b2467a9a636aed5a283d09ade8900814d9181f)

Author SHA1 Message Date
Benno Schulenberg 508301a2ef browser: make the keystrokes ^W^Y and ^W^V work again
The functions to_first_file() and to_last_file() can get called from
do_statusbar_input(), which is called indirectly from do_prompt(),
and are expected to make the corresponding adjustment.

This fixes https://savannah.gnu.org/bugs/?61273.

Bug existed since version 5.0, commit 07c1ac90.
2021-10-04 11:38:30 +02:00
Hussam al-Homsi bb8f40989f tweaks: change 'return ++var;' to 'return var + 1;'
This avoids an unused and misleading assignment that might make
someone think the incremented variable will be used again.

Signed-off-by: Hussam al-Homsi <sawuare@gmail.com>
2021-10-02 17:41:03 +02:00
Benno Schulenberg fde86518ae tweaks: rename a function, to be more fitting
The file wasn't marked; a piece of text was marked, resulting in
a region, and it is this region that gets written out to a file.
2021-09-29 15:37:06 +02:00
Benno Schulenberg 61b3aa6626 tweaks: use five symbolic names, to make eight function calls clearer 2021-09-29 15:35:18 +02:00
Benno Schulenberg 6799bc69a6 tweaks: adjust three parameters -- two were mistaken, one superfluous
The calls of write_file() in do_spell() and do_formatter() write out
a temporary file -- such a file does not have an 'openfile' record,
so setting 'annotate' to TRUE was pointless.  Using the correct value
for this parameter allows dropping two conditions in write_file().

And when 'exiting' is TRUE and --save-on-exit is in effect, it is
slightly wasteful to stat() the written file and store the info in
its 'openfile' record as the buffer will be closed directly after.

So, now the only place where 'annotate' is TRUE is when writing out
the full buffer to a normally named file.
2021-09-29 15:04:22 +02:00
Benno Schulenberg 0c01227d86 tweaks: rename a parameter, to fit better what it is used for 2021-09-29 12:34:04 +02:00
Benno Schulenberg c74fd81302 tweaks: rename a parameter and invert its logic
This makes more sense (an emergency file is not a temp file) and
avoids the constant negating.
2021-09-29 12:20:21 +02:00
Benno Schulenberg 4b30cfb8f8 tweaks: rename a variable, to be more visible and to match others 2021-09-29 11:56:45 +02:00
Benno Schulenberg 36b6416a7b tweaks: reshuffle some lines and adjust some indentation 2021-09-29 11:52:23 +02:00
Benno Schulenberg e0334e861d shutdown: when dying, do not install/restore a handler for Ctrl+C
First, we don't want the writing of an emergency file to be interrupted
by the user.  But more important: the routine for restoring the handler
also disables SIGINT, which would leave the terminal with a non-working
Ctrl+C.

Saving an emergency file calls write_file() in a unique manner: with
thefile == NULL, fullbuffer == FALSE (even though the entire buffer
will be saved, of course) and tmp == TRUE (even though it is not a
temporary file, as it will persist after nano exits).  But in fact
we want the handler for Ctrl+C installed only for normal files, not
for temporary files and not for emergency files -- the user should
not be able to interrupt the writing of those.

This fixes https://savannah.gnu.org/bugs/?61237.

Bug existed since version 4.3, commit 8550c6bd.
2021-09-29 11:32:48 +02:00
Benno Schulenberg b07fb5a811 files: exclude the call of fsync() from the tiny version
To avoid a spurious error message when the user chooses to write
the current buffer to a fifo.

Reported-by: André Kugland <kugland@gmail.com>
  https://lists.gnu.org/archive/html/nano-devel/2021-09/msg00031.html
2021-09-28 11:00:48 +02:00
Benno Schulenberg 9ab49658d7 files: prepending to a fifo makes no sense, so do not try that
Trying to prepend would hang nano until some other process writes
something to the fifo.

This fixes https://savannah.gnu.org/bugs/?61236.

Bug existed since before version 2.2.4.
2021-09-28 10:10:37 +02:00
Benno Schulenberg bb3d367716 files: making a backup of a fifo makes no sense, so do not try that
This fixes https://savannah.gnu.org/bugs/?61235.

Bug existed since version 4.3, commit 1b2018e9,
since opening a fifo was made possible again.
2021-09-28 09:45:49 +02:00
Benno Schulenberg 26c0a7962e files: check for a fifo only when it is an existing file
To avoid referencing an uninitialized value.

Reported-by: André Kugland <kugland@gmail.com>
  https://lists.gnu.org/archive/html/nano-devel/2021-09/msg00031.html
2021-09-28 09:44:52 +02:00
Benno Schulenberg a2b20a1915 files: do not call fsync() on a fifo, to avoid a spurious error message
This fixes https://savannah.gnu.org/bugs/?61234.

The original report was in:
  https://lists.gnu.org/archive/html/nano-devel/2021-09/msg00029.html
Reported-by: André Kugland <kugland@gmail.com>

Bug existed since version 5.0, commit a84cdaaa.
2021-09-27 17:23:49 +02:00
Benno Schulenberg 2087c20a83 tweaks: in comments, say "buffer" instead of "file" where appropriate 2021-09-27 16:37:03 +02:00
Benno Schulenberg 5512c63bdd copyright: update to the current year for significantly changed files 2021-09-24 11:01:41 +02:00
Benno Schulenberg 46cdf8b745 startup: if TERM is unset, try falling back to VT220 instead of failing
Curses cannot function if not informed via TERM which type of terminal
is being used.  As many terminals are mostly compatible with a VT220,
falling back to "vt220" when TERM is unset has a good chance of giving
the user a usable nano, instead of simply failing.

(Falling back to "vt100" is not good as it contains padding delays.)

This partially addresses https://bugs.debian.org/991982.
2021-09-20 10:38:25 +02:00
Benno Schulenberg fdc0b0ac24 tweaks: rename three variables, to follow the general scheme
Also rewrap a line, reshuffle two others, and remove two redundant
comments.
2021-09-20 10:08:56 +02:00
Benno Schulenberg 239c794503 feedback: use a smaller diamond to represent an anchor, to not overflow
In the terminal font that I use nowadays (that deals well with
combining characters), the normal diamond exceeded the boundaries
of a single cell and thus partly covered the first character of
the relevant line.
2021-09-19 12:03:12 +02:00
Benno Schulenberg 189960c467 cutting: copy anchors into the cutbuffer, so that undo can restore them
When a segment of text is extracted, copy any anchors that it has
into the cutbuffer, so that they get saved in the undo item, so that
an undo will put these anchors back on the lines where they were,
instead of leaving an inherited anchor at the top of the segment.

And when text is pasted, clear any anchors in it, so that they will
not travel nor multiply.

This fixes https://savannah.gnu.org/bugs/?61162.

Bug existed since version 5.0, since anchors were introduced.
2021-09-19 11:29:39 +02:00
Benno Schulenberg 04f8aa83ef tweaks: reshuffle a few lines, for esthetics and to elide an #ifdef 2021-09-17 10:06:21 +02:00
Benno Schulenberg 802a20b222 tweaks: rename a variable, to be more grammatical 2021-09-16 12:32:19 +02:00
Benno Schulenberg fe5f05f037 files: give the user time to absorb a warning about someone else editing
That is: pause a little to jolt the user, and then leave the message
on the status bar.

This fixes https://savannah.gnu.org/bugs/?61147.

Bug existed since version 4.8, commit 416386ed.
2021-09-12 10:43:07 +02:00
Benno Schulenberg 5cedb53c62 files: write a lock file also for a freshly saved buffer
This fixes https://savannah.gnu.org/bugs/?61146

Bug existed since version 2.3.2, since --locking was introduced,
and continued to exist since version 4.8 despite commit 497f126b
claiming to have fixed it.
2021-09-12 10:00:17 +02:00
Benno Schulenberg 650dc14e0f tweaks: rename a defined type, to fit within the general pattern
So that it can be colorized as a type by a general syntax rule.

(The name is now uglier than it was, but... alas.)
2021-09-11 18:05:03 +02:00
Benno Schulenberg b6366411dc tweaks: reshuffle a few lines to avoid an #ifdef and unbalanced braces 2021-09-11 15:07:05 +02:00
Benno Schulenberg 914921887e tweaks: rename a variable, to make more sense 2021-09-11 11:09:56 +02:00
Benno Schulenberg 64a8f1930e history: emit a warning when file cannot be made private [coverity] 2021-09-08 09:15:41 +02:00
Benno Schulenberg ae61bab60b files: when there is a slash after the dot, then there is no extension
This fixes https://savannah.gnu.org/bugs/?61071.

Bug existed since commit f429ebe3 from three days ago.
2021-08-23 09:52:32 +02:00
Benno Schulenberg 47c8e627f4 build: help Haiku find the header files that define mkstemps()
The documentation (https://www.haiku-os.org/docs/api/libroot.html)
says that BSD extensions are enabled by default, but somehow this
does not seem to be the case on my system.  With _DEFAULT_SOURCE
defined, though, src/files.c now compiles fine.
2021-08-22 11:42:34 +02:00
Benno Schulenberg f429ebe34d files: add the original file's suffix to the name of a temporary file
This allows 'aspell' to recognize a C file and thus
spell check only the comments and strings.

This fulfills https://savannah.gnu.org/bugs/?61056.
2021-08-22 11:41:19 +02:00
Benno Schulenberg 083bbae0e4 tweaks: rename a variable, away form an abbreviation 2021-08-20 10:35:56 +02:00
Benno Schulenberg eaff5ec9e5 files: check the result of fdopen(), to avoid a possible crash
When safe_tempfile() returns a valid filename, it should also
return a valid open stream.

This fixes https://savannah.gnu.org/bugs/?61064.

Bug existed since version 1.3.8, commit 5e068c60.
2021-08-20 10:28:42 +02:00
Benno Schulenberg 1b5d9171f2 tweaks: try chmodding a dump file only when it was actually written 2021-07-14 10:38:02 +02:00
Benno Schulenberg 50543300d9 tweaks: reshuffle some code to elide a variable, and improve a comment 2021-07-14 10:36:15 +02:00
Benno Schulenberg d9469b894f tweaks: remove a redundant feedback message
Any error message will already have been written to the terminal by
statusline().  Also, "Buffer not written to" looked too much like
"Buffer written to"; one had to look closely to see the difference.
2021-07-14 10:21:01 +02:00
Benno Schulenberg 6b9c24f7dd feedback: when not in curses mode, write error messages to the terminal
No errors ought to occur when not in curses mode, but when they *do*
occur, increase the chances that we can figure out what happened.
2021-07-14 10:16:31 +02:00
Benno Schulenberg 5954eeaff2 tweaks: reshuffle a fragment of code, to prepare for the next change 2021-07-14 10:08:32 +02:00
Benno Schulenberg c84a769733 memory: free any allocated strings, also in the emergency code path 2021-07-14 10:06:04 +02:00
Benno Schulenberg e3ef778756 files: when the buffer is nameless, include the PID in name of dump file
Make sure that when multiple nanos with nameless buffers die,
each of them tries saving those buffers to different files.

This addresses https://savannah.gnu.org/bugs/?60902.
Reported-by: Julian Rosen <julianrosen@gmail.com>
2021-07-14 10:02:44 +02:00
Benno Schulenberg 806e8e439f tweaks: reshuffle some lines to elide a variable
Having a local variable that gets assigned to just once looks rather
poor.  To me it makes more sense to have two separate exit points: one
for failure somewhere in the middle, and one for success at the end.
This way it is completely clear which value gets returned when.
2021-07-10 16:18:29 +02:00
Benno Schulenberg 30aaea2d04 tweaks: rename a variable and flip its logic, to avoid two negations
Plus, it makes more sense to start in the state "not saved" than in
the state "failed".
2021-07-10 15:56:38 +02:00
Benno Schulenberg d0cb64650b usage: improve the description of the --positionlog option
And make the wording for the --historylog option similar.

This fixes https://savannah.gnu.org/bugs/?60868.

Bug existed since version 2.3.0, commit 8e2a9307, since the
saving and restoring of the cursor position was introduced.
2021-07-01 16:45:49 +02:00
Benno Schulenberg 177e4e5805 general: prevent die() from getting recursed into
When something that is called from die() calls die() again,
there is nothing we can do any more but give up.

This would have prevented the spiralling as
seen in https://savannah.gnu.org/bugs/?60853.
2021-06-30 15:54:21 +02:00
Benno Schulenberg 8d1a666dcf input: give up on the input stream only after millions of errors
This mitigates a problem seen sometimes among the Red Hat crash reports:
somehow wgetch() keeps returning ERR, as if it were in nodelay mode.
(I've seen this happen once after nano came out of suspension.)

Using a much larger error-count value gives the user a few seconds
to type something and hopefully get out of the error condition.
2021-06-29 14:31:22 +02:00
Benno Schulenberg fc01c5a10e feedback: when not in curses mode, just skip displaying any message
Calling die() could trigger another call of emergency_save(), which
could fail and cause another call to statusline(), which would call
die() again...  Spiralling until stack space runs out.

This fixes https://savannah.gnu.org/bugs/?60853.

Bug existed since version 5.1, commit 7942dab0.

Original report was in https://bugzilla.redhat.com/1976410.
Reported-by: Souptik Dutta Roy <duttaroy.souptik@gmail.com>
2021-06-29 13:07:41 +02:00
Benno Schulenberg 45420968ee tweaks: correct two typos and a spello [codespell] 2021-06-17 10:55:23 +02:00
Benno Schulenberg 3c35538e8b tweaks: add Schiermonnikoog to the list of friendly islands
(The commit message is a joke, of course.  Instead, this commit just
removes some unneeded comments and corrects one bit of whitespace.)
2021-06-16 11:19:23 +02:00
Benno Schulenberg 44a6c4963b tweaks: avoid a compiler warning when configured with --enable-tiny 2021-06-15 10:20:28 +02:00
Benno Schulenberg 9f8309fba8 help: use smaller triangles for the arrows
In Dejavu Sans Mono the old pointing triangles had a decent size,
but in Noto Mono and in Ubuntu Mono (fonts that handle combining
diacritics better) those triangles were massive, visually taking
up more than a single cell, overlapping the closing parenthesis
when they are displayed in the second column.  Not nice.

The new pointing small triangles look good in the Noto and Ubuntu
fonts, but are real tiny in Dejavu.  :|  Oh well, one can't have
everything.

(Other triangles are not an option, because they don't degrade to
actual arrows when on a Linux console.)
2021-06-14 09:29:27 +02:00
Benno Schulenberg bf7954bdb7 tweaks: rename a variable, for contrast with the function name 2021-06-13 16:57:54 +02:00
Benno Schulenberg 0371dd1bde tweaks: rename two functions, to get rid of an ugly _void suffix
Also drop an unneeded prototype.
2021-06-13 12:17:33 +02:00
Benno Schulenberg 7c53b133a1 tweaks: use two symbolic names instead of TRUE and FALSE, for clarity 2021-06-13 12:06:24 +02:00
Benno Schulenberg 984c9e1078 tweaks: redraw only the affected line instead of doing a full refresh
When the spotlighting needs to be cancelled, there is no need to do a
full refresh of the edit window -- redrawing just the relevant line is
enough.  (And when there is just one row, it is enough too.)
2021-06-11 16:52:56 +02:00
Benno Schulenberg d7e3226158 memory: move the correct number of bytes, and not one too many
We want to reduce the size of the answer by one byte,
not keep the full answer (plus terminating NUL).

This fixes https://savannah.gnu.org/bugs/?60764.

Bug existed since version 2.9.8, commit f304b9ae,
since piping text to an external command was introduced.
2021-06-10 11:34:04 +02:00
Benno Schulenberg e2e8bf0a3e options: accept 'set minicolor' for setting the color of the minibar
When it is not specified, it defaults to the value for 'titlecolor'.

When not using --minibar, I want the title bar to be blue (as that is
how I've always had it), but with --minibar, I want this mini bar to
be grey, as otherwise it reminds me too much of the prompt bar.

Also, colorize 'set minicolor' as valid in a nanorc file.
2021-06-08 09:25:02 +02:00
Benno Schulenberg 3f340836a6 search: automatically drop the spotlighting after a few moments
Even though I know that spotlighted text is not selected, I still
regularly think for a fleeting instant that the spotlighted text
can be cut with a ^K.  Mitigate this by dropping the spotlighting
after 1.5 seconds (or 0.8 seconds when using --quick).
2021-06-03 12:02:04 +02:00
Hussam al-Homsi 092c62ccb8 bindings: allow copying text (with M-6) also when in view mode
This can be useful when wanting to search for the other occurrences
of some (long) string in the buffer: select, M-6, ^W, ^U, <Enter>.

Signed-off-by: Hussam al-Homsi <sawuare@gmail.com>
2021-06-02 11:09:24 +02:00
Benno Schulenberg 97dd505647 linter: strip filename and line plus column number from the message
Nano already opens the relevant file (when needed) and puts the cursor
at the relevant spot -- including this information in the message shown
on the bottom bar is just clutter and makes the message harder to read.
2021-05-30 11:30:32 +02:00
Benno Schulenberg 6ab70c2b0a tweaks: improve a comment, remove unneeded braces, reshuffle some lines 2021-05-28 16:42:56 +02:00
Benno Schulenberg 3a86b24a3e tweaks: remove a check that is not needed
The die() has been there for more than a year and no one reported a
problem.  And anyway, indenting does not create more than one group
-- this check was just to be certain.
2021-05-28 16:20:59 +02:00
Benno Schulenberg 8974430c11 rcfile: allow using "grey" or "gray" as a synonym for "lightblack"
Because "lightblack" sounds strange and will not occur to many people
as a possible color name.
2021-05-26 15:31:04 +02:00
Benno Schulenberg e044284998 rcfile: do not allow color name "normal" to have a prefix
Because "lightnormal" sounds strange, and can have unexpected effects.

This fixes https://savannah.gnu.org/bugs/?60668.

Bug existed since version 2.9.5, since the name "normal" was introduced.
2021-05-25 15:43:06 +02:00
Benno Schulenberg 4f9d55bb15 tweaks: normalize the indentation after the previous change 2021-05-25 15:31:54 +02:00
Benno Schulenberg 89adacff3d tweaks: condense some code by putting all color names in a single array 2021-05-25 15:28:02 +02:00
Benno Schulenberg 2314a1932f tweaks: use a symbol instead of a hard-coded number 2021-05-25 15:14:10 +02:00
Benno Schulenberg fb5eb4856b tweaks: drop an assignment that is already part of the called function 2021-05-25 15:11:33 +02:00
Benno Schulenberg f857959b8e startup: suppress "Search Wrapped" when using +? to search from EOF
When using +/ or +?, any minor feedback should be cleared,
to not distract from the highligted search result.

This fixes https://savannah.gnu.org/bugs/?60669.

Bug existed since version 5.5, commit b86f7868,
since the manner of grading status-bar messages changed.
2021-05-25 14:51:03 +02:00
Benno Schulenberg 405c2162b5 startup: allow using a bare "+" to mean put-cursor-on-last-line
Editors like 'vim' and 'ne' and 'uemacs' know this shorthand too.

This fulfills https://savannah.gnu.org/bugs/?60663.
2021-05-25 12:18:48 +02:00
Benno Schulenberg 8797ada815 startup: do not accept stray characters after a "+" on the command line
After a "+" only c, r, C, and R are valid characters,
and only when immediately followed by / or ?.

This fixes https://savannah.gnu.org/bugs/?60667.

Bug existed since version 4.4, commit 2326bf6,
since searching at startup with +/ or +? was introduced.
2021-05-25 12:15:52 +02:00
Benno Schulenberg 30bafc70cc tweaks: prevent two more size_t subtractions from going negative
This fully fixes https://savannah.gnu.org/bugs/?60658.

Found by compiling with -fsanitize=undefined.
2021-05-24 11:00:29 +02:00
Benno Schulenberg b38f0cbaf4 feedback: ensure that the reporting of DOS/Mac format is truthful
This fixes https://savannah.gnu.org/bugs/?60660.

Bug existed since version 5.7, commit 77da54c6.
2021-05-23 18:55:41 +02:00
Benno Schulenberg ceaae49b2d tweaks: avoid the subtraction of two size_t variables becoming negative
This fixes https://savannah.gnu.org/bugs/?60658.

Found by compiling with -fsanitize=undefined.
2021-05-23 11:46:37 +02:00
Benno Schulenberg d1957819c4 bindings: show either "^/" or "^-" in the help lines, instead of "^_"
The "^_" has always been poorly legible (the underscore melting into
the bottom of the terminal) and difficult to type (Shift+Ctrl+minus).
The "^/" is both more readable and easier to type.

In terminal emulators, "^/" is shown, but on a Linux console "^-",
as ^/ does a backspace in the default console key mapping.

Also, allow using "^-" when rebinding ^_ in a nanorc file.

This addresses https://savannah.gnu.org/bugs/?57393.
2021-05-22 16:52:56 +02:00
Benno Schulenberg 51adf02d34 wrapping: when copying the quoting part, adjust the file size accordingly
Simply adding the number of bytes in the quoting part is not entirely
correct, but... currently the indenting and commenting routines also
assume that the whitespace and commenting characters that are added or
removed are single-byte characters...  It will require another patch
to make this all fully correct, but for the default configuration
(and probably most other cases) the current fix will work fine.

This fixes https://savannah.gnu.org/bugs/?60605.

Bug existed since version 4.4, commit 8fce33af from two years ago,
since this automatic copying of the quoting part was introduced.
2021-05-14 10:24:07 +02:00
Benno Schulenberg f23e98dd3a memory: prevent a leak when copying the leading quoting to the next line
This fixes https://savannah.gnu.org/bugs/?60596.

Bug existed since version 4.4, commit 8fce33af from two years ago,
since this automatic copying of the quoting part was introduced.
2021-05-14 09:56:45 +02:00
Benno Schulenberg 6472a6b828 display: when a message gets overwritten, note that it is cleared
When on a one-row terminal a message gets automatically "dropped"
after a few moments, the subsequent waiting for a keystroke should
not think that there is still a message on the status bar.

This fixes https://savannah.gnu.org/bugs/?60591.

Bug existed since commit 8d974cd2 from two days ago.
2021-05-12 16:00:11 +02:00
Benno Schulenberg b741b1c985 startup: skip drawing edit window when having message on one-row terminal
When there is just one row and there is a message, it is not a good idea
to draw the contents of the buffer as it would overwrite the message.

This fixes https://savannah.gnu.org/bugs/?60582.

Bug existed since version 2.7.0, since nano allows very flat terminals,
and was made worse by commit 2cf28f9d from yesterday.
2021-05-12 15:47:21 +02:00
Benno Schulenberg 5f87ed5644 statusbar: ensure that "No further matches" does not get overwritten
Redraw the content of the edit window (for the undone final completion)
before pushing out the "No further matches" message, so that the latter
will not get overwritten by the buffer content -- in case the terminal
has just one row.

This fixes https://savannah.gnu.org/bugs/?60581.

Bug existed since commit 2cf28f9d from yesterday.
2021-05-11 15:58:21 +02:00
Benno Schulenberg 8d974cd292 statusbar: on a one-row terminal, drop light messages after a few moments
Only important error messages (ALERT) and information that the user
requested (^C, M-D) should stay put until the next keystroke.  Other
messages should be overwritten by the text of the buffer after just
a few moments, to make a one-row terminal slightly more friendly.

This addresses https://savannah.gnu.org/bugs/?60570.
2021-05-10 20:08:49 +02:00
Benno Schulenberg 2cf28f9db7 statusbar: suppress the cursor when the terminal has just one row
When showing a message on the status bar, the cursor should be off.

This fixes https://savannah.gnu.org/bugs/?60510.

Bug existed since version 2.7.0, since nano allows very flat terminals.
2021-05-10 12:27:56 +02:00
Benno Schulenberg 36ffb5f0ac statusbar: suppress --constantshow when the terminal has just one row
When there is just one row, the text to be edited needs to be shown
there, not some meta information about the cursor position.

This fixes https://savannah.gnu.org/bugs/?60563.

Bug existed since version 2.7.0, since nano allows very flat terminals.
2021-05-09 19:16:03 +02:00
Benno Schulenberg 07fd4c4598 tweaks: condense and correct a comment, and move another
Since commit 5dcf375f from four years ago, a linter message must
contain a colon followed by a space for it to be recognized as a
linter message.
2021-05-07 12:40:25 +02:00
Benno Schulenberg 44fb3e9991 tweaks: frob some whitespace, and rewrap a line 2021-05-07 12:33:22 +02:00
Benno Schulenberg 088557c516 tweaks: remove a check that has become superfluous
Since version 5.6, commit 76742cc1, nano highlights the search match,
which means that the screen gets refreshed anyhow, so this specific
refresh for a one-row terminal is no longer needed.
2021-05-07 12:20:50 +02:00
Benno Schulenberg 4712d46462 linter: block the resizing signal while reading output from the linter
This prevents read() from returning unexpectedly and causing a crash.

This fixes https://savannah.gnu.org/bugs/?60537.
Reported-by: Filips Romāns <frfilips@gmail.com>

Bug existed since version 2.4.2, since the handling of SIGWINCH changed.
2021-05-06 13:30:41 +02:00
Benno Schulenberg b368faf11c replacing: report the number of replacements also on a one-row terminal
That is: call edit_refresh() right away, to prevent the edit_refresh()
in the main loop from overwriting the status-bar message.

This fixes https://savannah.gnu.org/bugs/?60516.

Bug existed since version 2.7.2, commit f920e0d3.
2021-05-05 10:41:55 +02:00
Benno Schulenberg 7303f0c7b4 search: show "This is the only occurrence" also on a one-row terminal
That is: call edit_refresh() right away, to prevent the edit_refresh()
in the main loop from overwriting the status-bar message.

This fixes https://savannah.gnu.org/bugs/?60518.

Bug existed since version 5.6, commit 76742cc1.
2021-05-05 10:36:18 +02:00
Benno Schulenberg eb3cc3a32d minibar: stay out of sight when the terminal has just one row
When there is just one row, the user wants to see text on this row,
not a bar with some meta info.

This fixes https://savannah.gnu.org/bugs/?60508.

Bug existed since version 5.5, since the minibar was introduced
with commit d31cc373.
2021-05-03 15:52:15 +02:00
Benno Schulenberg a45e1f89c0 oops: that doesn't work -- you can't break out of two for loops at once
This effectively reverts the previous commit.
2021-04-24 13:56:36 +02:00
Benno Schulenberg c1cd813dcb tweaks: elide a function that is now basically just two lines 2021-04-24 11:48:04 +02:00
Benno Schulenberg c96e62e33a startup: save the compiled file-matching regexes, to avoid recompiling
This reduces startup time by seven percent (when using the standard set
of syntaxes) when opening just one file that doesn't match any syntax,
and more than ten percent when opening multiple files.  It takes some
extra memory, but... not wasting CPU cycles is more important.

This addresses https://savannah.gnu.org/bugs/?56433.
2021-04-24 10:54:04 +02:00
Benno Schulenberg 6283557d2f memory: prevent a use-after-free when the user respects a lock file
This fixes https://savannah.gnu.org/bugs/?60447.

Bug existed since commit 2f718e11 from a month ago.
2021-04-23 12:20:45 +02:00
Benno Schulenberg af90f03ac5 tweaks: condense three comments, drop another, and rewrap a line 2021-04-23 12:04:19 +02:00
Benno Schulenberg 588022ab8c editing: prevent the pointer for the top row from becoming dangling
When undoing several actions, it is possible for the line at the top
of the screen to be removed, leaving 'edittop' pointing to a structure
that has been freed.  Soon after, 'edittop' is referenced to determine
whether the cursor is offscreen...  Prevent this invalid reference by
stepping 'edittop' one line back in that special case.  This changes
the normal centering behavior of Undo when the cursor goes offscreen,
but... so be it.

When a single node is deleted, it is always possible to step one line
back, because a buffer contains always at least one line (even though
maybe empty), so if the current line could be deleted, there must be
one before it (when at the top of the screen).

This fixes https://savannah.gnu.org/bugs/?60436.

Bug existed since version 2.3.3, commit 60815461,
since undoing does not always center the cursor.
2021-04-23 09:35:12 +02:00
Benno Schulenberg cf0820549b tweaks: avoid calling extra_chunks_in() when not softwrapping
The function is somewhat costly; better avoid it whenever possible.
2021-04-22 12:19:09 +02:00
Benno Schulenberg f54bc6c7d6 indicator: adjust the size to the number of visible lines, not chunks
Since two commits ago, the position of the indicator shows the position
of the viewport relative to the full buffer in terms of actual lines,
not of visual chunks (to avoid excessive computation).  But the size of
the indicator stayed constant, as if it always covered as many lines as
the edit window has rows.  But the latter will not be the case when
softwrapping occurs.  Therefore, when softwrapping, compute how many
actual lines are visible in the viewport, and adjust the size of the
indicator accordingly.
2021-04-22 11:52:57 +02:00
Benno Schulenberg 2cdff6c32c tweaks: adjust two comments, and reshuffle two fragments
Also rename two variables, to be more fitting.
2021-04-21 16:52:35 +02:00
Benno Schulenberg 49d8b99e4f softwrap: avoid time-consuming computations, to burden large files less
Whenever softwrap was toggled on or line numbers were toggled on/off or
the window was resized, the extra rows per line needed to be recomputed
for ALL the lines.  For large files with many long lines this was too
costly.

(This change causes the indicator to have an incorrect size when there
are many softwrapped chunks onscreen, but that will be addressed later.)

This fixes https://savannah.gnu.org/bugs/?60429.

Problem existed since version 5.0, since the indicator was introduced.
2021-04-21 16:40:20 +02:00