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| -rw-r--r-- | pod/perldata.pod | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/pod/perldata.pod b/pod/perldata.pod index 8bf3dfdab3..e46507a759 100644 --- a/pod/perldata.pod +++ b/pod/perldata.pod @@ -120,7 +120,13 @@ restrictions. If working under the effect of the C<use utf8;> pragma, the following rules apply: - / (?[ ( \p{Word} & \p{XID_Start} ) + [_] ]) \p{XID_Continue}* /x + / (?[ ( \p{Word} & \p{XID_Start} ) + [_] ]) + (?[ ( \p{Word} & \p{XID_Continue} ) ]) * /x + +That is, a "start" character followed by any number of "continue" +characters. Perl requires every character in an identifier to also +match C<\w> (this prevents some problematic cases); and Perl +additionally accepts identfier names beginning with an underscore. If not under C<use utf8>, the source is treated as ASCII + 128 extra controls, and identifiers should match |