If the tail of the split lines always starts with a space (that should be removed), and no other lines do, then this maybe close (wrapped for posting): 

perl -nle
"if(m[^\s(.*)]){$s.=$1}else{length($s)&print$s;$s=$_;next};END{print$s
+}" 
file >out

[download]
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: perl one-liner, is it possible? by BrowserUk
in thread perl one-liner, is it possible? by hxwu

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