I am trying to create a new file with NERDTree. I hit the a

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Editorial Team

Asked: May 31, 20262026-05-31T10:10:03+00:00 2026-05-31T10:10:03+00:00

I am trying to create a new file with NERDTree. I hit the a key to create a new file and I get the message:

E21: Cannot make changes, 'Modifiable' is off

I’m using MacVim with Janus (almost out of the box).

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Editorial Team · Answer 1 · 2026-05-31T10:10:04+00:00

Editorial Team

:set ma

which is short for

:set modifiable

will make a buffer modifiable. And

:set noma

does the opposite.

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