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Lint (3)
  • >> Lint (3) ( Solaris man: Библиотечные вызовы )
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    NAME

         B::Lint - Perl lint
    
    
    

    SYNOPSIS

         perl -MO=Lint[,OPTIONS] foo.pl
    
    
    

    DESCRIPTION

         The B::Lint module is equivalent to an extended version of
         the -w option of perl. It is named after the program lint
         which carries out a similar process for C programs.
    
    
    

    OPTIONS AND LINT CHECKS

         Option words are separated by commas (not whitespace) and
         follow the usual conventions of compiler backend options.
         Following any options (indicated by a leading -) come lint
         check arguments. Each such argument (apart from the special
         all and none options) is a word representing one possible
         lint check (turning on that check) or is no-foo (turning off
         that check). Before processing the check arguments, a
         standard list of checks is turned on. Later options override
         earlier ones. Available options are:
    
         context Produces a warning whenever an array is used in an
                 implicit scalar context. For example, both of the
                 lines
    
                     $foo = length(@bar);
                     $foo = @bar;
                 will elicit a warning. Using an explicit B<scalar()> silences the
                 warning. For example,
    
                     $foo = scalar(@bar);
    
    
         implicit-read and implicit-write
                 These options produce a warning whenever an
                 operation implicitly reads or (respectively) writes
                 to one of Perl's special variables.  For example,
                 implicit-read will warn about these:
    
                     /foo/;
    
                 and implicit-write will warn about these:
    
                     s/foo/bar/;
    
                 Both implicit-read and implicit-write warn about
                 this:
    
                     for (@a) { ... }
    
    
         dollar-underscore
                 This option warns whenever $_ is used either
                 explicitly anywhere or as the implicit argument of a
                 print statement.
    
         private-names
                 This option warns on each use of any variable,
                 subroutine or method name that lives in a non-
                 current package but begins with an underscore ("_").
                 Warnings aren't issued for the special case of the
                 single character name "_" by itself (e.g. $_ and
                 @_).
    
         undefined-subs
                 This option warns whenever an undefined subroutine
                 is invoked.  This option will only catch explicitly
                 invoked subroutines such as foo() and not indirect
                 invocations such as &$subref() or $obj->meth(). Note
                 that some programs or modules delay definition of
                 subs until runtime by means of the AUTOLOAD
                 mechanism.
    
         regexp-variables
                 This option warns whenever one of the regexp
                 variables $', $& or $' is used. Any occurrence of
                 any of these variables in your program can slow your
                 whole program down. See the perlre manpage for
                 details.
    
         all     Turn all warnings on.
    
         none    Turn all warnings off.
    
    
    

    NON LINT-CHECK OPTIONS

         -u Package
                 Normally, Lint only checks the main code of the
                 program together with all subs defined in package
                 main. The -u option lets you include other package
                 names whose subs are then checked by Lint.
    
    
    

    BUGS

         This is only a very preliminary version.
    
    
    

    AUTHOR

         Malcolm Beattie, [email protected].
    
    
    
    


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