Brad King 9c4a500f75 cmSystemTools: Fix TrimWhitespace for non-ascii strings (#15735) ...

Since commit v2.8.11~59^2 (cmSystemTools: Generalize TrimWhitespace to
all whitespace, 2013-03-27) we incorrectly use `c <= ' '` to determine
if `c` is a whitespace character.  With a signed `char` type UTF-8
encoded strings may be truncated because values above 0x7f appear
negative and therefore less than 0x20.  Use `isspace(c)` instead.

2015-09-10 10:05:21 -04:00

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