Hi

M-C-\ is supposed to run indent-region resp. cperl-indent-region right?

(Running C-h k will show the function bound to a key-combi)

Guess what, I can't even activate this key-combination on my laptop with Windows + German keyboard with remapped CTRL.° (I'm too lazy to figure out why)

I'm using emacs since university, it's only a few years I'm even actively using indent-region (and only since I remapped a closing curly } to run it automatically on the Perl block)

Now if you take 100 average emacs hackers, how many will know indent-region ? I bet all will know TAB .

indent-region is not even in the menus of emacs, cperl-mode is adding it's own version when activated.

That's why I couldn't replicate your problem at first.

Now from the docs of indent-region (all demos with 'emacs27 -Q')

C-h f indent-region

...
  3) Indent each line via ‘indent-according-to-mode’.
...
[download]

from here on you can click on the links and navigate back with l (last)

(indent-according-to-mode)

Indent line in proper way for current major mode.
*Normally*, this is done by calling the function specified by the
variable ‘indent-line-function’.
[download]

indent-line-function is a variable defined in ‘indent.el’.

...
Setting this function is all you need to make TAB indent appropriately
+.
...
[download]

as you can see the default behavior is supposed to be that of TAB in a single line.

Cperl-mode extended regional indentation with line-breaks for {blocks}

And that feature is biting you with nested hashes.

> The cperl-mode is the default supplied with the above.

you are contradicting yourself since your recipe says M-x cperl-mode

Emacs default is still perl-mode

°) And here we are at the very heart why many vimmers hate emacs - byzantine hotkeys. Which gets even worse with non US keyboards. A problem shared by Perl's sigils.

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