You're absolutely right. The double '[' got me.
2014-07-31 10:34 GMT+02:00 Marc Kleine-Budde <[email protected]>: > On 07/29/2014 04:39 PM, Kristof Verdonck wrote: > > I'm using an ancient ptxdist, but that doesn't matter because I'm > > isolating the SED-version check. > > > > If I run the regex > > from > http://git.pengutronix.de/?p=ptxdist.git;a=blob;f=configure.ac;h=22c8df03a8c225514a3df7ba4c9fb29c515c3e24;hb=HEAD > > sed --version 2>/dev/null | sed -ne "1 > s/.*GNU.*\s\([[0-9\+\.]]\+\).*/\1/p" > > then it returns empty, both with sed 4.2.1 and 4.2.2. > > Are you using the unmodified regex from the configure.ac in the shell? > > Try this instead: > > sed --version 2>/dev/null | \ > sed -ne "1 s/.*GNU.*\s\([0-9\+\.]\+\).*/\1/p" > > Note: '[' vs. '[[', as you have to quote '[' in configure.ac, as it's > processed by m4. > > Marc > > -- > Pengutronix e.K. | Marc Kleine-Budde | > Industrial Linux Solutions | Phone: +49-231-2826-924 | > Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | > Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | > > > -- > ptxdist mailing list > [email protected] > >
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