reformat a selection or a function reformat all file

[grumpyf0x48]

When you select a code block or an entire function and do Code -> Reformat Code, the entire file is reformatted !

It was working fine with previous Plugin: Bash Support.

[jansorg]

The difference to legacy BashSupport is that an external formatter (i.e. shfmt) is used. This formatter is only supporting to format all of the code passed to it.

The next major version of BashSupport Pro, 2.0, will improve this situation (it's already available in the preview versions).
If text is selected, then this range is expanded to the next complete Bash construct and is then send to the formatter.
Formatting content which isn't valid on its own, e.g. a in a b c of for a in a b c; do echo $a; done would reformat the for loop, for example. But that's mostly the same as formatters of other languages in IntelliJ.