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tool_getparam: warn on more unicode prefixes

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If a string argument is expected and the first two bytes are 0xe2 ex80
and the third has the 7th bit set, that's enough for curl to warn.

Previously we tried to detect and warn only for the unicode double
quote, but users might use single quotes, other quotes or even lead the
argument with one of the "zero widths" characters. This is an attempt to
detect many of those. Without triggering for "normal" IDN hostnames.

Closes #18459
This commit is contained in:
Daniel Stenberg 2025-09-03 09:52:36 +02:00
parent 4c70b71ba4
commit 765b5ab0cd
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GPG key ID: 5CC908FDB71E12C2
3 changed files with 13 additions and 8 deletions
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4
tests/data/test469
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@ -45,8 +45,8 @@ warn about Unicode quote character
# Verify data after the test has been "shot"
<verify>
<stderr>
%hex[Warning: The argument '%e2%80%9chost:' starts with a Unicode quote where maybe an ]hex%
Warning: ASCII " was intended?
%hex[Warning: The argument '%e2%80%9chost:' starts with a Unicode character. Maybe ASCII ]hex%
Warning: was intended?
</stderr>
</verify>
</testcase>

4
tests/data/test470
View file

@ -45,8 +45,8 @@ warn about Unicode quote character read from config file
# Verify data after the test has been "shot"
<verify>
<stderr mode="text">
%hex[Warning: The argument '%e2%80%9chost:fake%e2%80%9d' starts with a Unicode quote where ]hex%
Warning: maybe an ASCII " was intended?
%hex[Warning: The argument '%e2%80%9chost:fake%e2%80%9d' starts with a Unicode character. Maybe ]hex%
Warning: ASCII was intended?
</stderr>
</verify>
</testcase>