On platforms that don't support SIGWINCH vi can be configured
with FEATURE_VI_USE_SIGNALS disabled and FEATURE_VI_WIN_RESIZE
enabled. This allows the user to force an update with ^L when
the screen is resized.
However, because the SIGWINCH handler hasn't run the virtual
screen buffer won't have been updated and the display becomes
corrupted. Fix this by calling new_screen() if necessary.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Commit bb983f30e (vi: fix faulty undo after autoinsert) has a
number of problems:
- The commit message refers to 'autoinsert' when it really means
'autoindent'.
- The indentation of undo_push_insert() was incorrect.
- Most seriously the commit only fixed the problem for cases where
the indentation was exactly one character. This is because undo_push()
only allows single characters to be queued for UNDO_INS_QUEUED.
Lifting this restriction allows the example given in the previous
commit message (with a three character indent) to work.
function old new delta
undo_push 406 435 +29
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 29/0) Total: 29 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Currently if the 'r' command is followed by a carriage return a
literal CR replaces the current character.
Fix this so that:
- a new line is inserted
- the autoindent setting is respected
- the cursor is placed at the start of the new line
function old new delta
do_cmd 5052 5060 +8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 8/0) Total: 8 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Enable autoinsert and enter the following with an indent of three
spaces:
line 1
line 2
Using 'u' to undo the last insert results in:
line1e 2
The insertion of the indent hasn't been properly recorded.
Since recording insertions is a common operation add a convenience
function, undo_push_insert(), to handle this and use it to record
the autoindent correctly.
function old new delta
undo_push_insert - 36 +36
string_insert 133 129 -4
char_insert 518 473 -45
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 36/-49) Total: -13 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Michał Berger has reported two issues:
- Repeatedly deleting and undoing the deletion of the last line
results in characters being lost from the end of the line.
- Deleting the bottom line twice then attempting to undo each of
these deletions results in a segfault.
The problem seems to be an incorrect test for whether the text buffer
is empty.
Reported-by: Michał Berger <michallinuxstuff@gmail.com>
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
If busybox is compiled with FEATURE_VI_REGEX_SEARCH enabled, command
":s/x/y/" searches not only in the current line, but continues search
after it. This makes range searches (":1,3s/x/y/") work incorrect. For
example file "./test":
1
2
3
$ vi ./test
:1,2s/3/e/
gives us:
1
2
e
function old new delta
char_search 213 241 +28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
At worst show_status_line() might be called needlessly when the
user presses ^L/^R, but I don't think we'll get many complaints
about that.
function old new delta
do_cmd 4592 4558 -34
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-34) Total: -34 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This is the behaviour observed with standard vim and busybox vi of at
least 1.22.1. It was changed with commit "32afd3a vi: some
simplifications" which happened before 1.23.0.
Mistyping filename on command line happens fairly often and it's better
we restore the old behaviour to avoid a few unnecessary flash writes and
sometimes efforts of debugging bugs caused by those unneeded stray
files.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Along with it, there are other changes
- Check for uppercase X is removed as the expression will be always false and
:X itself is another totally different command in standard vim
- The status line will show number of written lines instead of lines requested
by the colon command. This is also how the standard vim is doing, though
the difference is that '!' has to be explicitly specified in vim to allow
partial writes
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Redundant help texts (one which only repeats the description)
are deleted.
Descriptions and help texts are trimmed.
Some config options are moved, even across menus.
No config option _names_ are changed.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The '' command in vi doesn't currently work because after the first
apostrophe is read, the next character is converted to an integer
between 0 and 25 inclusive (for indexing the array of marks). The
comparison of the converted character with an apostrophe therefore never
succeeds, meaning that '' doesn't do anything.
Based on the patch by Francis Rounds <francis.rounds@4bridgeworks.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"
text data bss dec hex filename
829901 4086 1904 835891 cc133 busybox_before
829665 4086 1904 835655 cc047 busybox
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Currently basic undo functionality with the 'u' key depends on
FEATURE_VI_YANKMARK. These two features are separate, so we can remove this
dependency.
Signed-off-by: Andrew Fuller <abf@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
If the :r command is used to read a file after the last line of the
buffer the last line of the buffer and the first line of the file
are joined. An extra blank line appears at the end of the buffer.
file 1
file 1
file 1file 2
file 2
file 2
~
~
The insertion point is normally at the start of the line following the
specified line. When the specified line is the last one the next_line
function baulks at moving to the non-existent following line.
Signed-off-by: Ron Yorston <rmy@tigress.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Commit 32afd3a introduced these regressions on the master branch:
Starting vi with no filename on the command line gives the status message
"'(null)' Bad address" instead of "- No file 1/1 100%".
Starting vi with a non-existent file on the command line gives the status
message "'new.txt' No such file or directory" instead of "- new.txt 1/1 100%"
Signed-off-by: Ron Yorston <rmy@tigress.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
While at it, fix brace matching to actually show the match
(missed fflush was causing cursor positioning to be buffered);
shorten brace matching code; remove unused macro indirection
in indicate_error().
Custom linker script 'busybox_ldscript' found, using it
function old new delta
indicate_error - 61 +61
mysleep 43 56 +13
char_insert 483 486 +3
find_pair 167 124 -43
Indicate_Error 61 - -61
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/1 up/down: 77/-104) Total: -27 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The second argument to text_hole_delete was incorrect: it should
be a pointer to the end of the hole.
Signed-off-by: Ron Yorston <rmy@tigress.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
