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Re: My plans for Bison: history

From: Paul Eggert
Subject: Re: My plans for Bison: history
Date: Wed, 13 Feb 2019 18:15:14 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0

On 2/13/19 5:51 PM, Eric S. Raymond wrote:
One of my old blog posts implies that I used to believe it was
1970. I don't remember believing any year but 1973

Johnson said in a 2008 interview <> that he wrote Yacc after adopting the B compiler, which by then was an orphan; but he later says that Dennis Ritchie was still actively working on B while he was working on Yacc, so it's not clear how "orphan" B was by then. Maybe he is referring to Ritchie's work on "New B" (1971-1972) while he maintained the older B compiler. If so, I'd say that Yacc started development closer to 1970 than 1973.

After writing all the above, I looked at Ritchie's history of C <>, which dates the first version of Yacc by 1971 or so (1970 is also plausible).

You could write Johnson and ask; see <>.

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