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52597: fix character counts in context of operator and operand errors

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This commit is contained in:
Bart Schaefer 2024-02-24 21:16:15 -08:00
parent 69c0c646bb
commit 6c50d15562
2 changed files with 21 additions and 7 deletions

3
ChangeLog
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@ -1,5 +1,8 @@
2024-02-24 Bart Schaefer <schaefer@zsh.org>
* 52597: Src/math.c: fix multibyte and metafied character counts
when providing context for operator and operand errors
* 52596: Src/exec.c: metafy interpreter name for error message
* Stephane: 52591: Src/builtin.c: printf builtin must pass

25
Src/math.c
View file

@ -1557,21 +1557,32 @@ checkunary(int mtokc, char *mptr)
errmsg = 2;
}
if (errmsg) {
int len, over = 0;
int len = 0, over = 0;
char *errtype = errmsg == 2 ? "operator" : "operand";
while (inblank(*mptr))
mptr++;
len = ztrlen(mptr);
if (len > 10) {
len = 10;
over = 1;
if (isset(MULTIBYTE))
MB_CHARINIT();
while (over < 10 && mptr[len]) {
if (isset(MULTIBYTE))
len += MB_METACHARLEN(mptr+len);
else
len += (mptr[len] == Meta ? 2 : 1);
++over;
}
if ((over = mptr[len])) {
mptr = dupstring(mptr);
if (mptr[len] == Meta)
mptr[len+1] = 0;
else
mptr[len] = 0;
}
if (!*mptr)
zerr("bad math expression: %s expected at end of string",
errtype);
else
zerr("bad math expression: %s expected at `%l%s'",
errtype, mptr, len, over ? "..." : "");
zerr("bad math expression: %s expected at `%s%s'",
errtype, mptr, over ? "..." : "");
}
unary = !(tp & OP_OPF);
}