crontab -e not saving changes

‘crontab -e’ kept telling me ‘crontab: no changes made to crontab’ even though I’ve made changes. When I run ‘crontab -l’ to check, my changes were not saved.

Turned out it’s due to my environment variable:

export EDITOR=/usr/bin/gvim

Changing it to vim solves the problem:

export EDITOR=/usr/bin/vim

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