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38983: Make transpose-words handle numeric arguments sensibly

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Han Pingtian 2016-08-01 18:32:12 +08:00 committed by Peter Stephenson
parent 68e14c41f2
commit b2be8e1b6e
2 changed files with 57 additions and 40 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2016-08-12 Peter Stephenson <p.stephenson@samsung.com>
* Han Pingtian: 38983: Src/Zle/zle_word.c: make transpose-words
handle numeric arguments sensibly.
2016-08-12 Barton E. Schaefer <schaefer@zsh.org>
* 39028: Src/subst.c, Test/D04parameter.ztst: more join/split

92
Src/Zle/zle_word.c
View file

@ -678,46 +678,54 @@ killword(char **args)
int
transposewords(UNUSED(char **args))
{
int p1, p2, p3, p4, len, x = zlecs, pos;
int p1, p2, p3, p4, pt, len, x = zlecs, pos;
ZLE_STRING_T temp, pp;
int n = zmult;
int neg = n < 0, ocs = zlecs;
if (neg)
n = -n;
while (n--) {
while (x != zlell && zleline[x] != ZWC('\n') && !ZC_iword(zleline[x]))
INCPOS(x);
if (x == zlell || zleline[x] == ZWC('\n')) {
x = zlecs;
while (x) {
if (ZC_iword(zleline[x]))
break;
pos = x;
DECPOS(pos);
if (zleline[pos] == ZWC('\n'))
break;
x = pos;
}
if (!x)
return 1;
while (x != zlell && zleline[x] != ZWC('\n') && !ZC_iword(zleline[x]))
INCPOS(x);
if (x == zlell || zleline[x] == ZWC('\n')) {
x = zlecs;
while (x) {
if (ZC_iword(zleline[x]))
break;
pos = x;
DECPOS(pos);
if (zleline[pos] == ZWC('\n'))
return 1;
}
for (p4 = x; p4 != zlell && ZC_iword(zleline[p4]); INCPOS(p4))
;
for (p3 = p4; p3; ) {
pos = p3;
DECPOS(pos);
if (!ZC_iword(zleline[pos]))
break;
p3 = pos;
x = pos;
}
if (!p3)
if (!x)
return 1;
for (p2 = p3; p2; ) {
pos = x;
DECPOS(pos);
if (zleline[pos] == ZWC('\n'))
return 1;
}
for (p4 = x; p4 != zlell && ZC_iword(zleline[p4]); INCPOS(p4))
;
for (p3 = p4; p3; ) {
pos = p3;
DECPOS(pos);
if (!ZC_iword(zleline[pos]))
break;
p3 = pos;
}
if (!p3)
return 1;
pt = p3;
while (n--) {
for (p2 = pt; p2; ) {
pos = p2;
DECPOS(pos);
if (ZC_iword(zleline[pos]))
@ -733,20 +741,24 @@ transposewords(UNUSED(char **args))
break;
p1 = pos;
}
pp = temp = (ZLE_STRING_T)zhalloc((p4 - p1)*ZLE_CHAR_SIZE);
len = p4 - p3;
ZS_memcpy(pp, zleline + p3, len);
pp += len;
len = p3 - p2;
ZS_memcpy(pp, zleline + p2, len);
pp += len;
ZS_memcpy(pp, zleline + p1, p2 - p1);
ZS_memcpy(zleline + p1, temp, p4 - p1);
zlecs = p4;
pt = p1;
}
pp = temp = (ZLE_STRING_T)zhalloc((p4 - p1)*ZLE_CHAR_SIZE);
len = p4 - p3;
ZS_memcpy(pp, zleline + p3, len);
pp += len;
len = p3 - p2;
ZS_memcpy(pp, zleline + p2, len);
pp += len;
ZS_memcpy(pp, zleline + p1, p2 - p1);
ZS_memcpy(zleline + p1, temp, p4 - p1);
if (neg)
zlecs = ocs;
else
zlecs = p4;
return 0;
}