Hm. Some of these are so long. This seems to do the job.

s/ +( )/ $1/g

As mentioned by cog, be mindful that it must be   with the semicolon.

In reply to Re: Replace a word in a line except for the last char of the word? by dmorelli
in thread Replace a word in a line except for the last char of the word? by Ronnie Doorzon

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