Re: Command substitution reduce spaces even in strings

[Marc Herbert]

matez@fiz15.jupiter.vein.hu a écrit :
> Short example:

> $ echo $(echo "'alfa  beta'")
> 'alfa beta'
> 
> Instead of 'alfa  beta' with double space.

Always try tracing to understand what is going on:

echo $(set -x ;echo "'alfa  beta'")

++ echo ''\''alfa  beta'\'''


http://www.mpi-inf.mpg.de/~uwe/lehre/unixffb/quoting-guide.html