Re: Equivalent regex pattern

[Andreas Kusalananda Kähäri]

On Sun, Jun 05, 2022 at 11:55:28PM +0000, goncholden via wrote:
> What would be the equivalent regex pattern that matches the pattern described
> by the following parameter expansions?
> 
> fld="${flentry%[[:blank:]]*}"

This matches the shortest suffix string that starts with a blank (or,
the bit of the string from the last blank to the end).

        [[:blank:]][^[:blank:]]*$

> 
> fl="${flentry#*[[:blank:]]}"

The shortest prefix string that ends in a blank (or, the bit of the
string from the start to the first blank).

        ^[^[:blank:]]*[[:blank:]]

-- 
Andreas (Kusalananda) Kähäri
SciLifeLab, NBIS, ICM
Uppsala University, Sweden

.