X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pod%2Fperllocale.pod;h=8f7ce041386ab199b10ce32bca3a3afadc58112f;hb=4922ac1965f48a60b4e1d5d7776c4097f3edb79f;hp=bc7eecbfb8c597ed7241dd9cf7fa0a893c5f7df6;hpb=f224927c1e379a33cd6d5e0a5d25d0ecb9c9d964;p=p5sagit%2Fp5-mst-13.2.git diff --git a/pod/perllocale.pod b/pod/perllocale.pod index bc7eecb..8f7ce04 100644 --- a/pod/perllocale.pod +++ b/pod/perllocale.pod @@ -99,11 +99,11 @@ C. sort() is also affected if used without an explicit comparison function, because it uses C by default. B C and C are unaffected by locale: they always -perform a byte-by-byte comparison of their scalar operands. What's +perform a char-by-char comparison of their scalar operands. What's more, if C finds that its operands are equal according to the collation sequence specified by the current locale, it goes on to -perform a byte-by-byte comparison, and only returns I<0> (equal) if the -operands are bit-for-bit identical. If you really want to know whether +perform a char-by-char comparison, and only returns I<0> (equal) if the +operands are char-for-char identical. If you really want to know whether two strings--which C and C may consider different--are equal as far as collation in the locale is concerned, see the discussion in L. @@ -293,7 +293,7 @@ programs you run see the changes. See L for the full list of relevant environment variables and L for their effects in Perl. Effects in other programs are easily deducible. For example, the variable LC_COLLATE may well affect -your B program (or whatever the program that arranges `records' +your B program (or whatever the program that arranges "records" alphabetically in your system is called). You can test out changing these variables temporarily, and if the @@ -497,7 +497,7 @@ first example is useful for natural text. As noted in L, C compares according to the current collation locale when C is in effect, but falls back to a -byte-by-byte comparison for strings that the locale says are equal. You +char-by-char comparison for strings that the locale says are equal. You can use POSIX::strcoll() if you don't want this fall-back: use POSIX qw(strcoll); @@ -522,9 +522,9 @@ efficiency by using POSIX::strxfrm() in conjunction with C: if $xfrm_string eq strxfrm("mixed-case string"); strxfrm() takes a string and maps it into a transformed string for use -in byte-by-byte comparisons against other transformed strings during +in char-by-char comparisons against other transformed strings during collation. "Under the hood", locale-affected Perl comparison operators -call strxfrm() for both operands, then do a byte-by-byte +call strxfrm() for both operands, then do a char-by-char comparison of the transformed strings. By calling strxfrm() explicitly and using a non locale-affected comparison, the example attempts to save a couple of transformations. But in fact, it doesn't save anything: Perl @@ -736,8 +736,8 @@ Scalar true/false result never tainted. Subpatterns, either delivered as a list-context result or as $1 etc. are tainted if C is in effect, and the subpattern regular expression contains C<\w> (to match an alphanumeric character), C<\W> -(non-alphanumeric character), C<\s> (white-space character), or C<\S> -(non white-space character). The matched-pattern variable, $&, $` +(non-alphanumeric character), C<\s> (whitespace character), or C<\S> +(non whitespace character). The matched-pattern variable, $&, $` (pre-match), $' (post-match), and $+ (last match) are also tainted if C is in effect and the regular expression contains C<\w>, C<\W>, C<\s>, or C<\S>.