TSE: Regular Expression history: Ken Thompson, the inventor of grep

[knud van eeden]

Hello, 

FYIO

https://vm.tiktok.com/ZGdmK8yJ6/

Ken Thompson in 1968 built as the first Stephen Kleene's regular expressions concept into the 'QED' editor.

Later he built grep into the UNIX 'Ed' Editor.

The name grep comes from the Ed editor command g/re/p

which means 

GREP = 'G'lobal search for 'R'egular 'E'xpression and 'P'rint matching lines

TSE has it own version of grep, using 'x' as a parameter to indicate that searching for regular expressions is wanted.

with friendly greetings 

Knud van Eeden 

Sent from Yahoo Mail on Samsung Galaxy S24 Ultra / 1 terabyte / artificial intelligence

[knud van eeden]

Because of the copy right year date in TSE grep

which shows 

 1996

and this was the TSE version release at that year 1996:

  TSE pro   2.6           -    October   1996  First 32 bits version (=Win32) / console only. 

I assume this TSE 2.6 is the first version of Semware grep released?

(I have only 2.5 and 2.8 and it appears in any case already in 2.8 (and not in 2.5))

Thanks 

with friendly greetings

Knud van Eeden

--

---
You received this message because you are subscribed to the Google Groups "SemWare TSE Pro text editor" group.
To unsubscribe from this group and stop receiving emails from it, send an email to semware+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/semware/2051092473.1110430.1770755872147%40mail.yahoo.com.

[S.E. Mitchell]

I don't know the exact dates, but grep first appeared in these
products - they are _not_ in order by date:
TSE Jr for DOS, OS/2 and the TSR, v4.00E
TSE Pro for DOS, v2.50D
TSE Pro for Windows, v2.60B

On Tue, Feb 10, 2026 at 3:51 PM 'knud van eeden' via SemWare TSE Pro

> To view this discussion visit https://groups.google.com/d/msgid/semware/1947579495.1056230.1770756673946%40mail.yahoo.com.