-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Bruno Haible on 10/6/2009 3:15 PM: >> Sorry if I'm being dense, but perhaps there's an opportunity for >> clarification here? > > The relevant documentation in gnulib for this function is in the file > doc/posix-functions/isblank.texi: > > The reasons include: > > 1) No one asked for it so far. > > 2) On all known platforms, in all predefined locales, isblank(c) is likely > equivalent with (c == ' ' || c == '\t'). Look at the glibc definition > (in glibc/localedata/locales/i18n): The "blank" characters are > '\t', ' ', U+1680, U+180E, U+2000..U+2006, U+2008..U+200A, U+205F, > U+3000, > and none except the two is present in a common 8-bit encoding. > > So instead of using this function, with platform dependent semantics, most > programs will either want the pure ASCII version (c_isblank) or the Unicode > aware version (uc_is_blank).
Can we add a summary of this logic to the isblank.texi documentation, to point people to better replacements? - -- Don't work too hard, make some time for fun as well! Eric Blake e...@byu.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkrL5QEACgkQ84KuGfSFAYB++ACfXAqOnOFrR5TlNi/F7c/OG6rT auwAoImJ+wf5frICc+aWL8va82UnekgT =JW9n -----END PGP SIGNATURE-----
