From Newsgroup: comp.misc

On 24/04/2025 02:16, Lawrence D'Oliveiro wrote:

I was slightly disillusioned when I found that there were certain
characters that were not allowed in XML files, even when entity-encoded.

Not even in CDATA section? I wonder what characters those might be.
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From Newsgroup: comp.misc

hrtuybxi@outlook.com wrote:

On 24/04/2025 02:16, Lawrence D'Oliveiro wrote:

I was slightly disillusioned when I found that there were certain
characters that were not allowed in XML files, even when entity-encoded.

Not even in CDATA section? I wonder what characters those might be.

https://www.w3.org/TR/REC-xml/#charsets

Character Range
[2] Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] |
[#xE000-#xFFFD] | [#x10000-#x10FFFF]
/* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */

Most of the control characters are explicitly excluded, plus some
unicode code points.

And, yes, even in CDATA sections, because CDATA references the above
"Char" definition to define what characters are allowed in CDATA:

[20] CData ::= (Char* - (Char* ']]>' Char*))

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From Newsgroup: comp.misc

On Wed, 28 May 2025 20:18:54 +0200, hrtuybxi wrote:

On 24/04/2025 02:16, Lawrence D'Oliveiro wrote:

I was slightly disillusioned when I found that there were certain
characters that were not allowed in XML files, even when
entity-encoded.

Not even in CDATA section? I wonder what characters those might be.

The one I encountered was chr(3), a.k.a. CTRL/C. Somehow one of the
operators had managed to enter that into a comments field, causing my export-to-XML function to fail.
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