docfix from Peter Scott <Peter@PSDT.com>.

[p5sagit/p5-mst-13.2.git] / pod / perlsyn.pod

diff --git a/pod/perlsyn.pod b/pod/perlsyn.pod
index 724ba12..6d820b6 100644 (file)
--- a/pod/perlsyn.pod
+++ b/pod/perlsyn.pod
@@ -53,8 +53,8 @@ subroutine without defining it by saying C<sub name>, thus:
     sub myname;
     $me = myname $0            or die "can't get myname";
 
-Note that my() functions as a list operator, not as a unary operator; so
-be careful to use C<or> instead of C<||> in this case.  However, if
+Note that myname() functions as a list operator, not as a unary operator;
+so be careful to use C<or> instead of C<||> in this case.  However, if
 you were to declare the subroutine as C<sub myname ($)>, then
 C<myname> would function as a unary operator, so either C<or> or
 C<||> would work.
@@ -172,7 +172,7 @@ If the LABEL is omitted, the loop control statement
 refers to the innermost enclosing loop.  This may include dynamically
 looking back your call-stack at run time to find the LABEL.  Such
 desperate behavior triggers a warning if you use the C<use warnings>
-praga or the B<-w> flag.
+pragma or the B<-w> flag.
 Unlike a C<foreach> statement, a C<while> statement never implicitly
 localises any variables.
 
@@ -483,7 +483,7 @@ Or
 
 Or if you are certainly that all the C<&&> clauses are true, you can use
 something like this, which "switches" on the value of the
-C<HTTP_USER_AGENT> envariable.
+C<HTTP_USER_AGENT> environment variable.
 
     #!/usr/bin/perl 
     # pick out jargon file page based on browser
@@ -598,6 +598,11 @@ C</^#\s*line\s+(\d+)\s*(?:\s"([^"]+)")?\s*$/> with C<$1> being the line
 number for the next line, and C<$2> being the optional filename
 (specified within quotes).
 
+There is a fairly obvious gotcha included with the line directive:
+Debuggers and profilers will only show the last source line to appear
+at a particular line number in a given file.  Care should be taken not
+to cause line number collisions in code you'd like to debug later.
+
 Here are some examples that you should be able to type into your command
 shell: