[Portland-bugs] [Bug 104973] New: xdg-open can't handle URI schemes containing numbers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104973

            Bug ID: 104973
           Summary: xdg-open can't handle URI schemes containing numbers
           Product: Portland
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: minor
          Priority: medium
         Component: xdg-utils
          Assignee: portland-bugs at lists.freedesktop.org
          Reporter: elliotkendall at gmail.com

Per RFC 3986, 'Scheme names consist of a sequence of characters beginning with
a
letter and followed by any combination of letters, digits, plus ("+"), period
("."), or hyphen ("-").' However, the is_file_url_or_path() function in
xdg-open relies on the following regular expression to identify valid URI
schemes:

^[[:alpha:]+\.\-]+:

Not only does that fail on URI schemes that contain numbers (such as h323,
irc6, pkcs11, tn3270, etc.) it also incorrectly identifies strings beginning
with + . or - as valid URIs.

I propose the following replacement:

^[:alpha:][[:alnum:]+\.\-]*:

This bug is present in the most recent version of xdg-open in git.

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