flexi-streams-devel February 2012

flexi-streams-devel@common-lisp.net

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[flexi-streams-devel] *substitution-char* does not suppress external-format-encoding-error
by Dmitriy Ivanov 09 Feb '12

09 Feb '12

Hello folks, I have bumped into the following error while playing with Hunchentoot. (It is originated from url-decoding GET parameters with *hunchentoot-default-external-format*.) (let ((flex:*substitution-char* #\?)) (flex:octets-to-string #(#xC1 #xC2 #xC3 #xC4) :external-format :utf-8)) => "??" (let ((flex:*substitution-char* #\?)) (flex:octets-to-string #(#xC0 #xC1 #xC2 #xC3 #xC4) :external-format :utf-8)) -> signals: This sequence can't be decoded using UTF-8 as it is too short. 1 octet missing at then end. The reason is rather "simple": the decoder invokes the following chain of calls: compute-number-of-chars -> check-end -> signal-encoding-error This contrasts to the most of decoder code, which directly calls recover-from-encoding-error instead of signal-encoding-error. -- Sincerely, Dmitriy Ivanov lisp.ystok.ru

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flexi-streams-devel February 2012