Incorrect error message for updating with empty flags.

[thant]

Took me a while to understand the error messages as seen below.

I believed that the flag was invalid, but the actual problem was that the content to update was empty. Hence, the error message should be along the lines of '--n flag is empty!' or something akin to that so the user is able to understand what to edit quickly.

[nus-se-script]

Team's Response

No details provided by team.

The 'Original' Bug

[The team marked this bug as a duplicate of the following bug]

Update Error Message

Similar to "Remove Error Message" issue where the error generates a warning.

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_{[original: nus-cs2113-AY2223S2/pe-interim#2561] [original labels: type.FunctionalityBug severity.Medium]}

Their Response to the 'Original' Bug

[This is the team's response to the above 'original' bug]

Thanks for the notice. However, while the flags can be optional, the values are required in case the flag was already provided. That's the reason why the flag is invalid :)

Items for the Tester to Verify

❓ Issue duplicate status

Team chose to mark this issue as a duplicate of another issue (as explained in the Team's response above)

• I disagree

Reason for disagreement: [replace this with your explanation]

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❓ Issue response

Team chose [response.Rejected]

• I disagree

Reason for disagreement: [replace this with your explanation]

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❓ Issue severity

Team chose [severity.VeryLow]
Originally [severity.Medium]

• I disagree

Reason for disagreement: [replace this with your explanation]

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