Index does not accept positive integers prefixed with "+"

[nus-pe-bot]

When delete +2 is entered, the following error message is given:

Index must be a non-zero positive integer.

While the convention is to not prefix "+" in front of numbers, it abides by the constraints stated above, but is not accepted.

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_{[original: nus-cs2103-AY2021S2/pe-interim#3144] [original labels: severity.Low type.FunctionalityBug]}

[JodyLorah]

Team's Response

"+2" is not an integer.

Duplicate status (if any):

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