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perlfunc: link to "Plain Old Comments" section of perlsyn from __FILE__, __LINE__, and caller #17377

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merged 1 commit into from Dec 19, 2019
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perlfunc: link to "Plain Old Comments" section of perlsyn from __FILE__, __LINE__, and caller #17377

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8 changes: 8 additions & 0 deletions pod/perlfunc.pod
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Expand Up @@ -947,6 +947,10 @@ list context, caller returns
# 0 1 2
my ($package, $filename, $line) = caller;

Like L<C<__FILE__>|/__FILE__> and L<C<__LINE__>|/__LINE__>, the filename and
line number returned here may be altered by the mechanism described at
L<perlsyn/"Plain Old Comments (Not!)">.

With EXPR, it returns some extra information that the debugger uses to
print a stack trace. The value of EXPR indicates how many call frames
to go back before the current one.
Expand Down Expand Up @@ -2701,6 +2705,8 @@ X<__FILE__>
=for Pod::Functions the name of the current source file

A special token that returns the name of the file in which it occurs.
It can be altered by the mechanism described at
L<perlsyn/"Plain Old Comments (Not!)">.

=item fileno FILEHANDLE
X<fileno>
Expand Down Expand Up @@ -3955,6 +3961,8 @@ X<__LINE__>
=for Pod::Functions the current source line number

A special token that compiles to the current line number.
It can be altered by the mechanism described at
L<perlsyn/"Plain Old Comments (Not!)">.

=item link OLDFILE,NEWFILE
X<link>
Expand Down