cc: ast-developers@research.att.com Subject: Re: [ast-developers] string <> comparison in [[ ]] --------
> one our user complains about string comparison result: > > var1="4000" > var2=" 500" > [[ $var2 > $var1 ]]; echo $? > 0 > [[ "$var2" > "$var1" ]]; echo $? > 0 > > > Based on ksh man page: > string1 < string2 > True, if string1 comes before string2 based on ASCII value of their > characters. > > Space is ASCII 32, '4' is ASCII 52, thus space is less than 4. So, as > per ASCII value comparison, "4000" should have been greater than " 500", > whereas result is shows " 500" is greater. > > Odd is that old bash gave "correct" result, but the new one gives the > "wrong" one - the same as ksh, so I wonder if I miss something. > > Michal > I get 1 and 1 when I run this. $ uname -a Linux terra.research.att.com 2.6.32-279.1.1.el6.x86_64 #1 SMP Tue Jul 10 13:47:21 UTC 2012 x86_64 x86_64 i386-64 GNU/Linux $ print $LC_ALL C David Korn d...@research.att.com _______________________________________________ ast-developers mailing list ast-developers@research.att.com https://mailman.research.att.com/mailman/listinfo/ast-developers
