busybox/editors
Ron Yorston 038d400709 vi: reject change command when motion fails
If the motion command used to define the range of a change, yank or
delete fails the whole command should be rejected.  BusyBox vi already
handled failed searches in these circumstances.  Add some more cases:

- non-existent mark: d'x

- movement beyond end of file: c99999+ or 99999<<

This is implemented using a global variable which is set when a command
error is detected.  Unlike the case of motion within a line it's
insufficient to check that the motion command doesn't move the cursor:
this fails to process 'LyL' correctly, for example, as the second 'L'
doesn't move the cursor.

function                                             old     new   delta
indicate_error                                        75      82      +7
find_range                                           686     692      +6
do_cmd                                              4851    4852      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 14/0)               Total: 14 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-06-16 23:53:03 +02:00
..
awk.c awk: fix use-after-free in "$BIGNUM1 $BIGGERNUM2" concat op 2021-06-16 09:21:40 +02:00
cmp.c *: --help tweaks 2021-06-14 20:47:20 +02:00
Config.src restore documentation on the build config language 2018-06-06 15:16:48 +02:00
diff.c diff: code shrink 2021-02-22 19:00:07 +01:00
ed.c libbb: introduce and use fputs_stdout 2021-02-03 20:52:40 +01:00
Kbuild.src switch editors/* to embedded-in-source kbuild system 2013-11-13 12:45:33 +01:00
patch_bbox.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
patch_toybox.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
patch.c help text: replace [OPTIONS] with actual options (if not too long) 2020-12-13 22:34:05 +01:00
sed1line.txt
sed_summary.htm doc: add info about sed s/.../.../I modifier 2008-03-01 19:29:56 +00:00
sed.c *: --help tweaks 2021-06-13 01:08:48 +02:00
vi.c vi: reject change command when motion fails 2021-06-16 23:53:03 +02:00