Commit Graph

6476 Commits (4781d4d351bcea44065856cbb5fbf102d6a984f3)

Author SHA1 Message Date
Benno Schulenberg aedc3ddd49 tweaks: replace a function call or a macro with a hard number
Verify at startup that the number is not too small.
2017-04-04 19:17:02 +02:00
Benno Schulenberg 754aa8ba79 tweaks: elide a variable and a pair of braces 2017-04-04 19:15:15 +02:00
Benno Schulenberg 53cea142e0 tweaks: use memory on the stack instead of calling malloc() and free()
Rename some variables in the process, and remove two cluttering asserts.
2017-04-04 19:14:14 +02:00
Benno Schulenberg 7e18100197 tweaks: close the backup file also when we skip making a backup
(We still leak the backupname in that case, but I can't be bothered
with that now.)

Also elide a variable, trim some comments, and rewrap some lines.
2017-04-04 12:50:49 +02:00
Benno Schulenberg 0abf225129 files: check also for write errors when prepending, not just read errors 2017-04-04 12:21:43 +02:00
Kamil Dudka 70bcf752dc backup: prevent a symlink attack by operating on the file descriptor
Use futimens() instead of utime() to change the timestamps on a backup
file.  Otherwise, a non-privileged user could create an arbitrary symlink
with the name of the backup file and in this way fool a privileged user
to call utime() on the attacker-chosen file.

Import the relevant gnulib module to make sure futimens() is available.
2017-04-04 11:28:01 +02:00
Mike Frysinger 8f2b5bbf3d configure: fix up word boundary regex logic now that we have gnulib
If we're using the bundled gnulib regex module, then assume word boundary
support is available to avoid issues with the regcomp test.  This also
unifies the different code paths a bit.

This fixes https://savannah.gnu.org/bugs/?50705.
2017-04-04 11:08:58 +02:00
David Lawrence Ramsey f9a8d6ff4e scrolling: properly compensate for the onscreen chunks
If edittop is partially offscreen before we scroll, and it gets
scrolled more offscreen, we do need to compensate for the chunks
between firstcolumn and leftedge -- that is: the chunks between
the top row and the cursor row.

This fixes https://savannah.gnu.org/bugs/?50691.
2017-04-04 10:55:24 +02:00
David Lawrence Ramsey c3830517cc display: show '<' and '>' placeholders for characters that get split
When a two-column character cannot be shown because it straddles the
boundary between two chunks of a line, show the '>' placeholder for
its left "half", and '<' for its right "half".

This mitigates https://savannah.gnu.org/bugs/?49440.
2017-04-03 21:51:46 +02:00
Benno Schulenberg 6d70ab11d6 docs: mention another difference with Pico in the Info document 2017-04-02 13:26:53 +02:00
Benno Schulenberg 5f359179b2 docs: trim the TODO file a bit, and put the more important items first
Remove some things we're never going to do: allowing to replace
newlines, a regression framework, characterset conversions, or
jumping to various screen lines.
2017-04-02 13:09:52 +02:00
Benno Schulenberg be62368d54 po: update translations and regenerate POT file and PO files 2017-03-31 11:07:01 +02:00
Benno Schulenberg 032030566c bump version numbers and add a news item for the 2.8.0 release 2017-03-31 10:54:55 +02:00
Benno Schulenberg bc9862fbff tweaks: condense some declarations by reshuffling 2017-03-29 21:35:56 +02:00
Benno Schulenberg 582a624998 tweaks: frob some parentheses and other things, to be more consistent 2017-03-29 19:30:37 +02:00
Benno Schulenberg c7282e8821 tweaks: reshuffle two declarations for a more consistent order 2017-03-29 10:35:11 +02:00
Benno Schulenberg 1f9a6ab336 tweaks: factor out a bit of common code 2017-03-29 10:30:41 +02:00
Benno Schulenberg 33cefa9208 tweaks: elide an intermediate variable 2017-03-29 10:20:41 +02:00
Benno Schulenberg 873e3d6fa6 tweaks: don't loop over an initializer 2017-03-29 10:13:08 +02:00
Benno Schulenberg 54e4505b2f tweaks: frob a couple of comments 2017-03-28 19:44:41 +02:00
Benno Schulenberg 8091d0a574 tweaks: simplify and correct a computation
The leftedge variable is a column number, not an x position.
2017-03-28 19:24:37 +02:00
David Lawrence Ramsey 93c6248956 display: don't compensate for chunks before firstcolumn
The number of rows to draw shouldn't be compensated for the chunks
of edittop that are before firstcolumn, because they are offscreen.

This completes the fix for https://savannah.gnu.org/bugs/?50621.
2017-03-28 19:10:45 +02:00
David Lawrence Ramsey 66ef8f45a3 display: don't draw more chunks than the screen can hold
There is no need to always increase nrows by 1 or 2 -- an increase
of 1 is only needed when the line that borders on the scrolled region
needs to redrawn too: when this line was horizontally scrolled or when
the mark is on.

This fixes https://savannah.gnu.org/bugs/?50621.
Reported-by: David Lawrence Ramsey <pooka109@gmail.com>
2017-03-28 12:32:51 +02:00
David Lawrence Ramsey d01756bb69 moving: determine the correct leftedge when paging up/down too
The change in commit 244a503d for the <Up> and <Down> keys
needs to be done for <PageUp> and <PageDown> too.
2017-03-28 12:32:47 +02:00
Benno Schulenberg 644fedcb61 tweaks: reshuffle some more lines and improve four comments 2017-03-28 11:24:32 +02:00
Benno Schulenberg da3a015f7d tweaks: reshuffle some lines and adjust some comments 2017-03-28 10:38:08 +02:00
Benno Schulenberg bc876ca729 moving: /do/ redraw the prior line when the viewport hasn't changed
The complementary test on current_y should only be done when doing
a scroll-only, because only then the prior line can be offscreen.

This fixes https://savannah.gnu.org/bugs/?50658.
Reported-by: David Lawrence Ramsey <pooka109@gmail.com>
2017-03-28 10:31:45 +02:00
Benno Schulenberg 9cf980700c moving: don't try to redraw lines that have gone outside the viewport
When scrolling backward, it is not just the bottom line of the screen
that doesn't need to be redrawn: also the line /before/ the top line
doesn't need a redraw.  Mutatis mutandis for scrolling forward.

This fixes https://savannah.gnu.org/bugs/?50657.
2017-03-27 19:44:21 +02:00
Benno Schulenberg 244a503ddc moving: the current chunk cannot be beyond the last chunk of a line
When determining the leftedge of the current chunk, it is not simply
the leftedge that corresponds to the placewewant, but the leftedge that
corresponds to the minimum of the placewewant and the full line span.

This fixes https://savannah.gnu.org/bugs/?50653.
2017-03-27 17:45:39 +02:00
Benno Schulenberg c277cd6e5b tweaks: reshuffle some statements, to avoid double assignments 2017-03-27 11:38:52 +02:00
David Lawrence Ramsey 384332d08c display: make PageUp/PageDown use the correct beginning of the viewport
When typing PageUp or PageDOwn in non-smooth-scrolling mode, the cursor
should be placed at the start of the top line of the edit window.  This
means that, when the line at edittop is partially scrolled offscreen,
the cursor should be placed at openfile->firstcolumn, not at zero.

This fixes https://savannah.gnu.org/bugs/?50645.
Reported-by: David Lawrence Ramsey <pooka109@gmail.com>
2017-03-27 11:19:44 +02:00
David Lawrence Ramsey 6b1ad96f34 docs: update README.GIT for gnulib-related changes 2017-03-26 12:54:57 +02:00
David Lawrence Ramsey 0276e45465 configure: don't check for the existence of iswspace() anymore
The iswspace() was only used when iswblank() was missing.  The latter
is now provided by gnulib, so it is always available, so iswspace()
is not used at all anymore.
2017-03-26 12:50:33 +02:00
Benno Schulenberg 42ae3e377f docs: mention some more differences with Pico in the Info document
Mention the ability to use <Tab> in the search history, the ability
to restore the cursor position when reopening a file, the ability to
read output of a command, and the lack of file-managing commands in
the file browser.
2017-03-26 12:41:44 +02:00
Benno Schulenberg 58faff50ae tweaks: shorten a bit of logic 2017-03-24 21:37:06 +01:00
David Lawrence Ramsey 87a7c2e42d tweaks: fix a comment typo 2017-03-24 21:21:51 +01:00
David Lawrence Ramsey f4ee83a76d syntax: nanorc: color also the option "linenumbers" as being valid 2017-03-24 21:18:17 +01:00
Benno Schulenberg 59412b572f files: on second thought... keep the "[from ./]"
The "./" is a shorthand for "current working directory".
It is better to specify it, because it differs from what
Pico does: reading always from the user's home directory
no matter where the editor was started.
2017-03-24 12:19:30 +01:00
Benno Schulenberg 261b5b28c4 tweaks: gettextize a forgotten error message 2017-03-23 22:12:27 +01:00
Benno Schulenberg f987508891 files: drop the pointless "[from ./]" from the insert-file prompt
Only use the "from" thing when an operating directory is in effect,
because /only/ then the indicated directory can be something other
than "./".

Also, make it so that there is no space before the colon.
2017-03-23 22:10:47 +01:00
Benno Schulenberg 19b7021076 tweaks: suggest a separate color scheme for root
And slightly change the existing one for normal users.
2017-03-23 19:28:33 +01:00
Benno Schulenberg 9e7e88e157 bindings: accept "q" and "x" to exit from help viewer and file browser
"Q" is a pretty standard key to exit from something, and "X" is fairly
mnemonic -- better than "E" at least.
2017-03-23 12:42:53 +01:00
Benno Schulenberg c01d6a8f74 tweaks: reshuffle the bindings to group things more logically
Put all the movement keys together, in order of ascending stride.

Also, move the Undo/Redo keystrokes further up, so that, when the
user has a somewhat wider terminal than the usual 80 characters,
these keystrokes will be shown -- they are far more interesting
than the ^Y and ^V ones, for which PgUp and PgDn can be used.
2017-03-23 11:37:36 +01:00
Benno Schulenberg e46c6c9607 tweaks: ehm... the warning is more important for the softwrap case
But apparently none of these cases occur, because I can't trigger them.
2017-03-22 11:05:22 +01:00
Benno Schulenberg 8b7bbebeeb tweaks: add a warning for a condition that should never occur 2017-03-22 10:50:59 +01:00
Benno Schulenberg 55159b7b39 painting: don't try to start highlighting before column zero
This could happen when a tab or a double-width character straddles
the boundary between two softwrapped chunks.
2017-03-22 10:44:06 +01:00
David Lawrence Ramsey 0389a1d939 softwrap: adjust firstcolumn when the window width changes
If the number of columns in the edit window changes (which currently
only happens in two places: in regenerate_screen(), called when the
window is resized; and in main(), when line numbering mode is toggled),
the display will break if we're in softwrap mode and firstcolumn is
nonzero.  This is because the column width of softwrapped chunks has
changed, and firstcolumn is no longer the starting column of a chunk,
an assumption that all code using firstcolumn relies on.

To fix this problem, add a new function, ensure_firstcolumn_is_aligned(),
to adjust firstcolumn to the starting column of the chunk it's on, and
use it when the number of columns in the edit window changes.

(Note that this function uses the simplest possible fix, and could
probably be made more sophisticated.)
2017-03-22 10:44:06 +01:00
David Lawrence Ramsey c1f70185ba softwrap: save and restore firstcolumn when replacing text
In do_replace(), replacing text may change firstcolumn if the next match
is offscreen, and replacing text after that will not change it back.  In
order to keep the viewport unchanged, we have to save and restore not
just edittop, but firstcolumn as well.
2017-03-22 10:44:06 +01:00
David Lawrence Ramsey c888edf409 softwrap: save and restore firstcolumn when internally spell-fixing text
In do_int_spell_fix(), spell-checking text may change firstcolumn if
the next match is offscreen, and spell-checking text after that will
not change it back.  In order to keep the viewport unchanged, we have
to save and restore not just edittop, but firstcolumn as well.
2017-03-22 10:44:06 +01:00
David Lawrence Ramsey 7cd50b8c02 softwrap: save firstcolumn when justifying, restore it when unjustifying
In do_justify(), justifying text may change firstcolumn if the paragraph
ends offscreen, and unjustifying the text again will not change it back.
In order to keep the viewport unchanged, we have to save and restore not
just edittop, but firstcolumn as well.
2017-03-22 10:44:06 +01:00