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| author | Aristotle Pagaltzis <pagaltzis@gmx.de> | 2014-03-11 01:57:19 +0100 |
|---|---|---|
| committer | Karl Williamson <public@khwilliamson.com> | 2014-03-10 20:41:13 -0600 |
| commit | 08a33b6b0b73cadc9417b2e9e278d4bf6db28233 (patch) | |
| tree | 98ecea4ef8ae8a2b24074ebc928e1019d7ff6f52 /pod/perldiag.pod | |
| parent | 4e56b5b96e186b4dac180dc79cdb51d373a215e6 (diff) | |
| download | perl-08a33b6b0b73cadc9417b2e9e278d4bf6db28233.tar.gz | |
perldiag: Clarify that lexicals do not trigger "used only once"
Diffstat (limited to 'pod/perldiag.pod')
| -rw-r--r-- | pod/perldiag.pod | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/pod/perldiag.pod b/pod/perldiag.pod index 69d9622d46..5482684ddf 100644 --- a/pod/perldiag.pod +++ b/pod/perldiag.pod @@ -3223,10 +3223,12 @@ local() if you want to localize a package variable. (W once) Typographical errors often show up as unique variable names. If you had a good reason for having a unique name, then just mention it again somehow to suppress the message. The C<our> -declaration is provided for this purpose. +declaration is also provided for this purpose. -NOTE: This warning detects symbols that have been used only once -so $c, @c, %c, *c, &c, sub c{}, c(), and c (the filehandle or +NOTE: This warning detects package symbols that have been used only +once. This means lexical variables will never trigger this warning. +It also means that all of the package variables $c, @c, %c, as well +as *c, &c, sub c{}, c(), and c (the filehandle or format) are considered the same; if a program uses $c only once but also uses any of the others it will not trigger this warning. Symbols beginning with an underscore and symbols using special |