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IDProjectCategoryView StatusDate SubmittedLast Update
0003249Doomseeker[All Projects] Suggestionpublic2017-09-01 18:062017-10-25 01:00
Assigned To 
Platformx86_64OSDebian GNU/LinuxOS Versionbuster/sid
Product Version1.1 
Target VersionFixed in Version 
Summary0003249: Change Doomseeker to fail on invalid command line option
DescriptionSay I made a typo and instead of "--datadir /foo/bar/" option I omitted a character and had a typo "--datdir /foo/bar", Doomseeker would still start but with wrong (default) IP2C or plugin data I didn't intend to use. There's also a possibility of not understanding what went wrong in the case.
Steps To Reproduce
$ doomseeker --foo-bar --this-is-not-a-real-option
[20:48:56] Starting Doomseeker. Hello World! :)

(Doomseeker starts normally.)
Additional InformationBehavior with unrecognized options varies between programs. Few examples are listed below.

$ cat --foo-bar --this-is-not-a-real-option
cat: unrecognized option '--foo-bar'
Try 'cat --help' for more information.

$ slock --foo-bar --this-is-not-a-real-option                               
usage: slock [-v] [cmd [arg ...]]

$ gcc --foo-bar --this-is-not-a-real-option
gcc: error: unrecognized command line option ‘--foo-bar’
gcc: error: unrecognized command line option ‘--this-is-not-a-real-option’
gcc: fatal error: no input files
compilation terminated.

$ mpv --foo-bar --this-is-not-a-real-option
Error parsing option foo-bar (option not found)
Setting commandline option --foo-bar= failed.

Exiting... (Fatal error)

§ firefox --foo-bar --this-is-not-a-real-option
[Firefox starts normally.]

To improve user experience, I would suggest Doomseeker to fail with an informative message when a command line option for Doomseeker which doesn't exist is attempted.


  • from POSIX.1-2008 (2016)

Attached Files

- Relationships

-  Notes
User avatar (0018624)
WubTheCaptain (developer)
2017-10-25 00:48

Changed from a bug into a suggestion.
User avatar (0018625)
WubTheCaptain (developer)
2017-10-25 01:00
edited on: 2017-10-25 01:00

Nevermind me linking additional information to getopt, getopt_long() are GNU extensions but I think the part about "?" (an error) is worth looking more into.

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- Issue History
Date Modified Username Field Change
2017-09-01 18:06 WubTheCaptain New Issue
2017-10-25 00:48 WubTheCaptain Category Bug => Suggestion
2017-10-25 00:48 WubTheCaptain Summary Doomseeker doesn't fail on invalid command line option => Change Doomseeker to fail on invalid command line option
2017-10-25 00:48 WubTheCaptain Note Added: 0018624
2017-10-25 00:56 WubTheCaptain Additional Information Updated View Revisions
2017-10-25 01:00 WubTheCaptain Note Added: 0018625
2017-10-25 01:00 WubTheCaptain Note Edited: 0018625 View Revisions

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