[refurb
] Avoid triggering hardcoded-string-charset
for reordered sets
#14233
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Summary
It's only safe to enforce the
x in "1234567890"
case ifx
is exactly one character, since the set on the right has been reordered as compared tostring.digits
. We can't know ifx
is exactly one character unless it's a literal. And if it's a literal, well, it's kind of silly code in the first place?Closes #13802.