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config: update default URL regex

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The old one is in some cases too liberal. The new one is stricter in
two ways:

1. The protocol list is now explicit, rather than matching anything://
2. Allowed characters are now limited to the "safe character set", the
   "reserved character set", and some from the "unsafe character set"

Furthermore, some of the characters are restricted in how/when they
are allowed:

1. Periods, commas, question marks etc are allowed inside an URL, but
   not at the end.
2. [ ], ( ), " " and ' ' are allowed but only when balanced. This
   allows us to match e.g. [http://foo.bar/foo[bar]] correctly.

Closes #2016
This commit is contained in:
Daniel Eklöf 2025-04-02 08:41:46 +02:00
parent a50f78c599
commit 1760cb6ab8
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4 changed files with 45 additions and 33 deletions
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foot.ini
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@ -69,7 +69,7 @@
# launch=xdg-open ${url}
# label-letters=sadfjklewcmpgh
# osc8-underline=url-mode
# regex=(([a-z][[:alnum:]-]+:(/{1,3}|[a-z0-9%])|www[:digit:]{0,3}[.])([^[:space:](){}<>]+|\(([^[:space:](){}<>]+|(\([^[:space:](){}<>]+\)))*\)|\[([^]\[[:space:](){}<>]+|(\[[^]\[[:space:](){}<>]+\]))*\])+(\(([^[:space:](){}<>]+|(\([^[:space:](){}<>]+\)))*\)|\[([^]\[[:space:](){}<>]+|(\[[^]\[[:space:](){}<>]+\]))*\]|[^]\[[:space:]`!(){};:'".,<>?«»“”‘’]))
# regex=(((https?://|mailto:|ftp://|file:|ssh:|ssh://|git://|tel:|magnet:|ipfs://|ipns://|gemini://|gopher://|news:)|www\.)([0-9a-zA-Z:/?#@!$&*+,;=.~_%^\-]+|\([]\["0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*\)|\[[\(\)"0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*\]|"[]\[\(\)0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*"|'[]\[\(\)0-9a-zA-Z:/?#@!$&*+,;=.~_%^\-]*')+([0-9a-zA-Z/#@$&*+=~_%^\-]|\([]\["0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*\)|\[[\(\)"0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*\]|"[]\[\(\)0-9a-zA-Z:/?#@!$&'*+,;=.~_%^\-]*"|'[]\[\(\)0-9a-zA-Z:/?#@!$&*+,;=.~_%^\-]*'))
# You can define your own regex's, by adding a section called
# 'regex:<ID>' with a 'regex' and 'launch' key. These can then be tied