Public bug reported: weblint says it can accept input from stdin but then fails in actually doing so.
$ weblint --help weblint v2.26 Usage: weblint [filename or url]... (filename - reads STDIN) --help This message --context[=n] Show the offending line (and n surrounding lines) Error types: (default: all on) --[no]structure Structural issues, like unclosed tag pairs --[no]helper Helper issues, like missing HEIGHT & WIDTH --[no]fluff Fluff that can be removed, like bad tag attributes --only Turns off all other error types, as in --only --fluff $ cat public/404.html|weblint - Can't open -: No such file or directory at /usr/bin/weblint line 60. $ echo test | weblint - Can't open -: No such file or directory at /usr/bin/weblint line 60. $ apt policy weblint-perl weblint-perl: Installed: 2.26+dfsg-1 Candidate: 2.26+dfsg-1 Version table: *** 2.26+dfsg-1 500 500 http://de.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 500 http://de.archive.ubuntu.com/ubuntu bionic/universe i386 Packages 100 /var/lib/dpkg/status ** Affects: libhtml-lint-perl (Ubuntu) Importance: Undecided Status: New ** Tags: bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1914971 Title: weblint does not accept input from stdin To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libhtml-lint-perl/+bug/1914971/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs