On 03/10/2016 04:29 AM, Peter Rosin wrote: >> + elif test "$lt_cv_nm_interface" = "POSIX nm"; then >> + symxfrm="\\2 $ac_symprfx\\1 \\1" >> + lt_cv_sys_global_symbol_pipe="sed -n -e 's/^[[ >> ]]*$ac_symprfx$sympat[[ ]][[ ]]*\($symcode$symcode*\)[[ ]][[ >> ]]*.*$opt_cr$/$symxfrm/p'" > > Do you really need to handle leading and multiple whitespace here? > Posix, at least as seen here > http://pubs.opengroup.org/onlinepubs/009696699/utilities/nm.html > seems quite clear on no leading space and one space only as separator.
No, POSIX states that " " means at least one whitespace (could be multiple; implementations can align at will), and "Δ" means exactly one space character. Since nm didn't use the delta character, the code is correct at looking for multiple whitespace. http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap05.html -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
Description: OpenPGP digital signature