Emacs: Set tab indent for just one file on the fly

Question

I work on an open source project where the creator sets his tab-indents to 2 spaces.

I\'d like to just enable it on the fly for the one file I work on and not other fil

Answer 1

The easiest way to do this for a single buffer is to use M-x set-variable.

1. Type M-x set-variable and press enter
2. When prompted for the variable to set, set tab-width then press enter
3. You'll be prompted with the line Set tab-width (buffer-local) to value:. Put the value you want, then hit enter

The buffer should instantly be updated with the new value.