busybox/editors
Ron Yorston f277c9eebb vi: make de-indentation with ctrl-D more like vim
Commit ac6495f6f (vi: allow ctrl-D to reduce indentation) treated
ctrl-D during autoindent as a backspace.  This was adequate for
indentation using tabs but doesn't work well with the expandtab
option.  In the latter case it's necessary to backspace over all
the spaces.

Make ctrl-D work correctly when spaces are present in the indent.

Also, make it behave more like vim:

- ctrl-D is independent of autoindent;
- indentation is reduced even when the cursor isn't positioned at
  the end of the indent.

function                                             old     new   delta
char_insert                                          679     717     +38
get_column                                             -      37     +37
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 75/0)               Total: 75 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-04-20 11:21:43 +02:00
..
awk.c awk: allow printf('%c') to output NUL, closes 13486 2021-02-02 13:51:14 +01:00
cmp.c config: update size information 2018-12-28 03:20:17 +01:00
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
sed.c libbb: reduce the overhead of single parameter bb_error_msg() calls 2019-07-02 11:35:03 +02:00
vi.c vi: make de-indentation with ctrl-D more like vim 2021-04-20 11:21:43 +02:00