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vi: fix word operations across line boundaries

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Commit 4b49422a0 (vi: fix changes to word at end of line. Closes
11796) fixed a problem where an operation on a word at the end of
a line followed by a line starting with whitespace incorrectly
joined the lines.  However it also broke the case where operating
on multiple words across a line boundary *should* join the lines.

Fix this by detecting when trailing whitepace in a word operation
includes a newline.  Whitespace beyond the newline is excluded
from consideration.

function                                             old     new   delta
do_cmd                                              5083    5088      +5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 5/0)                 Total: 5 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Ron Yorston 2021-03-25 14:20:56 +00:00 committed by Denys Vlasenko
parent 1195782d79
commit 7b4c2276a8
1 changed files with 9 additions and 7 deletions
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16
editors/vi.c
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@ -3774,14 +3774,16 @@ static void do_cmd(int c)
place_cursor(0, 0);
if (c1 == 27) { // ESC- user changed mind and wants out
c = c1 = 27; // Escape- do nothing
} else if (strchr("wW", c1)) {
ml = 0; // multi-line ranges aren't allowed for words
if (c == 'c') {
// don't include trailing WS as part of word
while (isspace(*q) && q > p) {
q--;
}
} else if (c1 == 'w' || c1 == 'W') {
char *q0 = q;
// don't include trailing WS as part of word
while (q > p && isspace(*q)) {
if (*q-- == '\n')
q0 = q;
}
// for non-change operations WS after NL is not part of word
if (c != 'c' && q != p && *q != '\n')
q = q0;
dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
} else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
// partial line copy text into a register and delete