lockvar: what is the purpose?

Hi,

It seems any plugin can :unlockvar any global variable that was locked by another plugin. So, is the purpose of lockvar simply a friendly warning/sanity check?

Also, is there a speedup gained by using lockvar? (Maybe it helps the vimscript optimizer to know that variable cannot be modified?) If so, should I use lockvar whenever possible in my plugins?

Thanks!

Justin M. Keyes

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