> @@ -149,8 +146,8 @@ private void appendCanonicalizedHeaders(HttpRequest
> request, StringBuilder toSig
> // replacing any
> // newline characters and extra embedded white spaces in the
> value.
> for (String value : request.getHeaders().get(header)) {
> - value = Strings2.replaceAll(value, TWO_SPACE_PATTERN, " ");
> - value = Strings2.replaceAll(value, NEWLINE_PATTERN, "");
> + value = value.replace(" ", " ");
What should happen here if the input contains _three_ spaces? `"foo
bar".replace(" ", " ")` returns `"foo bar"`, i.e. a string that still has two
spaces.
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