bug#27306: Regression: Emacs Lisp Indentation

[Alexander Shukaev]

Hey,

In Emacs 25 series, the following snippet is indented as follows

  (user-error "Unexpected initialization file: `%s'
Expected initialization file: `%s'"
              (abbreviate-file-name user-init-file)
              (abbreviate-file-name this-init-file))

In Emacs 26 series, a call to `indent-region' changes the above 
indentation to

  (user-error "Unexpected initialization file: `%s'
Expected initialization file: `%s'"
   (abbreviate-file-name user-init-file)
   (abbreviate-file-name this-init-file))

which appears wrong to me.  Please, take a look at this.  Thank you.

Kind regards,
Alexander