cat CDATA output breaks for files containing the ]]> sequence

[github-actions]

Description

In tools/cat/cat.go, file content is placed inside a <content> element and serialized via encoding/xml. If a file contains the literal string ]]> (which closes a CDATA section), the resulting XML is malformed and will fail to parse.

Steps to Reproduce

echo 'some ]]> content' > test.xml
aict cat test.xml --xml | xmllint --noout -
# → parser error

Affected Files

Any file containing ]]>, including:

• XML/HTML source files
• Test fixtures
• Template files
• Generated code

Fix

Split on ]]> occurrences and use adjacent CDATA sections:

<![CDATA[some ]]]]><![CDATA[> content]]>

Or escape the sequence before wrapping in CDATA.

Related

tools/cat/cat.go content serialization

See also: XML spec section 2.7 — CDATA sections may not contain ]]>