[git commit] vi: allow 'gg' to specify a range

[Denys Vlasenko]

commit: https://git.busybox.net/busybox/commit/?id=b50ac07cba558c370be66226ae0ad762157ee59a
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master

Commit 7b93e317c (vi: enable 'dG' command. Closes 11801) allowed
'G' to be used as a range specifier for change/yank/delete
operations.

Add similar support for 'gg'.  This requires setting the 'cmd_error'
flag if 'g' is followed by any character other than another 'g'.

function                                             old     new   delta
do_cmd                                              4852    4860      +8
.rodata                                           108179  108180      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 9/0)                 Total: 9 bytes

Signed-off-by: Ron Yorston <rmy at pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 editors/vi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/editors/vi.c b/editors/vi.c
index f0bbc9518..22b8f7cf1 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -3437,7 +3437,7 @@ static int find_range(char **start, char **stop, int cmd)
 		// for non-change operations WS after NL is not part of word
 		if (cmd != 'c' && dot != t && *dot != '\n')
 			dot = t;
-	} else if (strchr("GHL+-jk'\r\n", c)) {
+	} else if (strchr("GHL+-gjk'\r\n", c)) {
 		// these operate on whole lines
 		buftype = WHOLE;
 		do_cmd(c);		// execute movement cmd
@@ -4027,6 +4027,7 @@ static void do_cmd(int c)
 			buf[1] = (c1 >= 0 ? c1 : '*');
 			buf[2] = '\0';
 			not_implemented(buf);
+			cmd_error = TRUE;
 			break;
 		}
 		if (cmdcnt == 0)