On Sat, Jan 09, 2016 at 07:29:20PM +0300, Alex Kost wrote: > >> From e183f8e473b97406968ecbda9fb13ebdf60963ec Mon Sep 17 00:00:00 2001 > >> From: Federico Beffa <[email protected]> > >> Date: Fri, 8 Jan 2016 14:23:12 +0100 > >> Subject: [PATCH 11/11] gnu: aspell: Wrap binary to find dictionaries. > >> > >> * gnu/packages/aspell.scm (aspell): Add 'wrap-aspell phase. > 'wrap-aspell' phase. > Typo --------------------------------------------------^ > > [...] > >> + (wrap-program bin/aspell > >> + '("ASPELL_CONF" "" = > >> + ("${ASPELL_CONF:-\"dict-dir > >> ${GUIX_PROFILE:-$HOME/.guix-profile}/lib/aspell\"}"))))))))) > > > > Just to clarify: what if I would like to run aspell with my own > > ASPELL_CONF. Will it work or will this default value override my own? > > I mean I want to run aspell like this: > > > > ASPELL_CONF=<something> aspell > > > > Will aspell be started with my <something>? > > Sorry for being lazy, now I see that it will work. Thanks to you (and > to the bash manual) for introducing me to ${parameter:-word} construct.
For reference, this useful feature is 'parameter expansion' and it is in the POSIX spec: http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_02 > > -- > Alex >
