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Can't enter angle-bracket colon angle-bracket in a post's title

Forum|Forum|21 days ago
April 1, 2026
4 replies
106 views

If I try to enter “<colon>” in a post’s title, I get a silly error message, “The title contains HTML tags”. I guess the forum coders don’t understand how to escape text with special characters to produce valid HTML.

johnrellisAuthor

Legend

@Nancy OShea Script injection is a common hacking practice. DON’T DO TH@T!

That’s not relevant to the issue here. It’s elementary programming for a platform generating HTML to encode literal text entered by the user into HTML that safely displays that literal text, e.g. see here:

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Safely_inserting_external_content_into_a_page

kglad

Community Expert

i showed how to do that and how to use P:

johnrellisAuthor

Legend

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@kglad i showed how to do that and how to use P<colon>

Your posts showed that it could be done but didn’t explain how?

Nancy OShea

Community Expert

Script injection is a common hacking practice. DON’T DO TH@T!

I also block insertion of html special characters on my own websites. That’s a standard security practice. We can’t be too careful in these modern times.

Nancy O'Shea— Product User & Community Expert

johnrellisAuthor

Legend

@kglad, are you able to make a test post with “<colon>” in the title?

kglad

Community Expert

yes

kglad

Community Expert

based on your complaint about P: , there’s probably a way

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