bug#46093: Shell-script mode formatting error eats half the page

[積丹尼 Dan Jacobson]

Here we observe lines severely shoved over due to Shell-script mode not
recognizing the statement has terminated. emacs-version "27.1".

$ cat x.sh
set /home/$j/.adobe /home/$j/.macromedia && for i do if test -d $i; then rm -vr 
$i; fi; done
                                                echo these lines are now 
indented wrongly
                                                echo these lines are now 
indented wrongly for the rest of the file.
                                                echo There is no recovery.

"Well then use if ...; then ..."

if set /home/$j/.adobe /home/$j/.macromedia
then for i do if test -d $i; then rm -vr $i; fi; done
     fi #UH OH, STILL MESSED UP
         set /home/$j/.procmail/backup #UH OH EVEN MORE
         if ! test -d $1 #AT LEAST INDENTING HAS STABILIZED finally



if set /home/$j/.adobe /home/$j/.macromedia
then
    for i do if test -d $i; then rm -vr $i; fi; done
    fi #STILL BAD


if set /home/$j/.adobe /home/$j/.macromedia
then
    for i
    do if test -d $i; then rm -vr $i; fi; done
fi #AH, FINALLY it has come to its senses.