[RT #36079] Convert ` to '.

8 files changed, 87 insertions, 87 deletions

diff --git a/lib/DB.pm b/lib/DB.pm
index 16ff99afa5..7048354fe7 100644
--- a/lib/DB.pm
+++ b/lib/DB.pm
@@ -258,7 +258,7 @@ sub backtrace {
     } elsif ($s eq '(eval)') {
       $s = "eval {...}";
     }
-    $f = "file `$f'" unless $f eq '-e';
+    $f = "file '$f'" unless $f eq '-e';
     push @ret, "$w&$s$a from $f line $l";
     last if $DB::signal;
   }
diff --git a/lib/File/Basename.pm b/lib/File/Basename.pm
index e6681d2616..fb72a0d8b8 100644
--- a/lib/File/Basename.pm
+++ b/lib/File/Basename.pm
@@ -215,7 +215,7 @@ sub basename {
   my($path) = shift;
 
   # From BSD basename(1)
-  # The basename utility deletes any prefix ending with the last slash `/'
+  # The basename utility deletes any prefix ending with the last slash '/'
   # character present in string (after first stripping trailing slashes)
   _strip_trailing_sep($path);
 
diff --git a/lib/Getopt/Std.pm b/lib/Getopt/Std.pm
index 823bc4dd91..920b5b46be 100644
--- a/lib/Getopt/Std.pm
+++ b/lib/Getopt/Std.pm
@@ -147,7 +147,7 @@ sub try_exit () {
     my $p = __PACKAGE__;
     print {output_h()} <<EOM;
   [Now continuing due to backward compatibility and excessive paranoia.
-   See ``perldoc $p'' about \$$p\::STANDARD_HELP_VERSION.]
+   See 'perldoc $p' about \$$p\::STANDARD_HELP_VERSION.]
 EOM
 }
 
diff --git a/lib/charnames.pm b/lib/charnames.pm
index d88ede0e59..e00bf53e76 100644
--- a/lib/charnames.pm
+++ b/lib/charnames.pm
@@ -966,7 +966,7 @@ sub import
   shift; ## ignore class name
 
   if (not @_) {
-    carp("`use charnames' needs explicit imports list");
+    carp("'use charnames' needs explicit imports list");
   }
   $^H{charnames} = \&charnames ;
   $^H{charnames_ord_aliases} = {};
diff --git a/lib/dumpvar.pl b/lib/dumpvar.pl
index 1c782dda4a..91ec407441 100644
--- a/lib/dumpvar.pl
+++ b/lib/dumpvar.pl
@@ -342,7 +342,7 @@ sub unctrlSet {
     if ($in eq 'unctrl' or $in eq 'quote') {
       $unctrl = $in;
     } else {
-      print "Unknown value for `unctrl'.\n";
+      print "Unknown value for 'unctrl'.\n";
     }
   }
   $unctrl;
diff --git a/lib/overload.pm b/lib/overload.pm
index b84552ffb1..006c4e22aa 100644
--- a/lib/overload.pm
+++ b/lib/overload.pm
@@ -20,7 +20,7 @@ sub OVERLOAD {
 	$ {$package . "::(" . $_} = $sub;
 	$sub = \&nil;
       }
-      #print STDERR "Setting `$ {'package'}::\cO$_' to \\&`$sub'.\n";
+      #print STDERR "Setting '$ {'package'}::\cO$_' to \\&'$sub'.\n";
       *{$package . "::(" . $_} = \&{ $sub };
     }
   }
@@ -153,14 +153,14 @@ sub constant {
         last;
     }
     elsif (!exists $constants {$_ [0]}) {
-        warnings::warnif ("`$_[0]' is not an overloadable type");
+        warnings::warnif ("'$_[0]' is not an overloadable type");
     }
     elsif (!ref $_ [1] || "$_[1]" !~ /(^|=)CODE\(0x[0-9a-f]+\)$/) {
         # Can't use C<ref $_[1] eq "CODE"> above as code references can be
         # blessed, and C<ref> would return the package the ref is blessed into.
         if (warnings::enabled) {
             $_ [1] = "undef" unless defined $_ [1];
-            warnings::warn ("`$_[1]' is not a code reference");
+            warnings::warn ("'$_[1]' is not a code reference");
         }
     }
     else {
@@ -890,9 +890,9 @@ See L<BUGS AND PITFALLS>.
 =head2 Losing Overloading
 
 The restriction for the comparison operation is that even if, for example,
-`C<cmp>' should return a blessed reference, the autogenerated `C<lt>'
+C<cmp> should return a blessed reference, the autogenerated C<lt>
 function will produce only a standard logical value based on the
-numerical value of the result of `C<cmp>'.  In particular, a working
+numerical value of the result of C<cmp>.  In particular, a working
 numeric conversion is needed in this case (possibly expressed in terms of
 other conversions).
 
@@ -1100,13 +1100,13 @@ Use it as follows:
   require two_face;
   my $seven = two_face->new("vii", 7);
   printf "seven=$seven, seven=%d, eight=%d\n", $seven, $seven+1;
-  print "seven contains `i'\n" if $seven =~ /i/;
+  print "seven contains 'i'\n" if $seven =~ /i/;
 
 (The second line creates a scalar which has both a string value, and a
 numeric value.)  This prints:
 
   seven=vii, seven=7, eight=8
-  seven contains `i'
+  seven contains 'i'
 
 =head2 Two-face References
 
@@ -1387,7 +1387,7 @@ Use this module like this:
   my $cnt = $iter;
 
   while ($cnt) {
-    $cnt = $cnt - 1;		# Mutator `--' not implemented
+    $cnt = $cnt - 1;		# Mutator '--' not implemented
     $side = (sqrt(1 + $side**2) - 1)/$side;
   }
   printf "%s=%f\n", $side, $side;
@@ -1417,7 +1417,7 @@ the tables of operations, and change the code which fills %subr to
     $subr{$op} = eval "sub {shift() $op shift()}";
   }
   foreach my $op (split " ", "@overload::ops{qw(unary func)}") {
-    print "defining `$op'\n";
+    print "defining '$op'\n";
     $subr{$op} = eval "sub {$op shift()}";
   }
 
@@ -1583,11 +1583,11 @@ The module might issue the following warnings:
 (W) The call to overload::constant contained an odd number of arguments.
 The arguments should come in pairs.
 
-=item `%s' is not an overloadable type
+=item '%s' is not an overloadable type
 
 (W) You tried to overload a constant type the overload package is unaware of.
 
-=item `%s' is not a code reference
+=item '%s' is not a code reference
 
 (W) The second (fourth, sixth, ...) argument of overload::constant needs
 to be a code reference. Either an anonymous subroutine, or a reference
diff --git a/lib/overload.t b/lib/overload.t
index 1021a5f24a..5d6e38d382 100644
--- a/lib/overload.t
+++ b/lib/overload.t
@@ -297,7 +297,7 @@ like($@, qr/no method found/);
 bless \$x, Oscalar;
 
 $na = eval { ~$a };		# Hash updated
-warn "`$na', $@" if $@;
+warn "'$na', $@" if $@;
 ok !$@;
 is($na, '_!_xx_!_');
 
@@ -935,25 +935,25 @@ unless ($aaa) {
 }
 
 {
-    # check the `$_[0]' is not an overloadable type warning
+    # check the '$_[0]' is not an overloadable type warning
     my $a = "" ;
     local $SIG{__WARN__} = sub {$a = $_[0]} ;
     $x = eval ' overload::constant "fred" => sub {} ; ' ;
     is($a, "");
     use warnings 'overload' ;
     $x = eval ' overload::constant "fred" => sub {} ; ' ;
-    like($a, qr/^`fred' is not an overloadable type at/);
+    like($a, qr/^'fred' is not an overloadable type at/);
 }
 
 {
-    # check the `$_[1]' is not a code reference warning
+    # check the '$_[1]' is not a code reference warning
     my $a = "" ;
     local $SIG{__WARN__} = sub {$a = $_[0]} ;
     $x = eval ' overload::constant "integer" => 1; ' ;
     is($a, "");
     use warnings 'overload' ;
     $x = eval ' overload::constant "integer" => 1; ' ;
-    like($a, qr/^`1' is not a code reference at/);
+    like($a, qr/^'1' is not a code reference at/);
 }
 
 {
diff --git a/lib/perl5db.pl b/lib/perl5db.pl
index 3d17d8fcf0..fd089707e6 100644
--- a/lib/perl5db.pl
+++ b/lib/perl5db.pl
@@ -722,7 +722,7 @@ sub eval {
 # Changes: 0.94
 #   + A lot of things changed after 0.94. First of all, core now informs
 #     debugger about entry into XSUBs, overloaded operators, tied operations,
-#     BEGIN and END. Handy with `O f=2'.
+#     BEGIN and END. Handy with 'O f=2'.
 #   + This can make debugger a little bit too verbose, please be patient
 #     and report your problems promptly.
 #   + Now the option frame has 3 values: 0,1,2. XXX Document!
@@ -731,24 +731,24 @@ sub eval {
 #     due to the need to examine the return value.
 #
 # Changes: 0.95
-#   + `v' command shows versions.
+#   + 'v' command shows versions.
 #
 # Changes: 0.96
-#   + `v' command shows version of readline.
-#     primitive completion works (dynamic variables, subs for `b' and `l',
-#     options). Can `p %var'
-#   + Better help (`h <' now works). New commands <<, >>, {, {{.
+#   + 'v' command shows version of readline.
+#     primitive completion works (dynamic variables, subs for 'b' and 'l',
+#     options). Can 'p %var'
+#   + Better help ('h <' now works). New commands <<, >>, {, {{.
 #     {dump|print}_trace() coded (to be able to do it from <<cmd).
-#   + `c sub' documented.
+#   + 'c sub' documented.
 #   + At last enough magic combined to stop after the end of debuggee.
 #   + !! should work now (thanks to Emacs bracket matching an extra
-#     `]' in a regexp is caught).
-#   + `L', `D' and `A' span files now (as documented).
-#   + Breakpoints in `require'd code are possible (used in `R').
+#     ']' in a regexp is caught).
+#   + 'L', 'D' and 'A' span files now (as documented).
+#   + Breakpoints in 'require'd code are possible (used in 'R').
 #   +  Some additional words on internal work of debugger.
-#   + `b load filename' implemented.
-#   + `b postpone subr' implemented.
-#   + now only `q' exits debugger (overwritable on $inhibit_exit).
+#   + 'b load filename' implemented.
+#   + 'b postpone subr' implemented.
+#   + now only 'q' exits debugger (overwritable on $inhibit_exit).
 #   + When restarting debugger breakpoints/actions persist.
 #   + Buglet: When restarting debugger only one breakpoint/action per
 #             autoloaded function persists.
@@ -756,25 +756,25 @@ sub eval {
 # Changes: 0.97: NonStop will not stop in at_exit().
 #   + Option AutoTrace implemented.
 #   + Trace printed differently if frames are printed too.
-#   + new `inhibitExit' option.
+#   + new 'inhibitExit' option.
 #   + printing of a very long statement interruptible.
-# Changes: 0.98: New command `m' for printing possible methods
-#   + 'l -' is a synonym for `-'.
+# Changes: 0.98: New command 'm' for printing possible methods
+#   + 'l -' is a synonym for '-'.
 #   + Cosmetic bugs in printing stack trace.
-#   +  `frame' & 8 to print "expanded args" in stack trace.
+#   +  'frame' & 8 to print "expanded args" in stack trace.
 #   + Can list/break in imported subs.
-#   + new `maxTraceLen' option.
+#   + new 'maxTraceLen' option.
 #   + frame & 4 and frame & 8 granted.
-#   + new command `m'
-#   + nonstoppable lines do not have `:' near the line number.
-#   + `b compile subname' implemented.
+#   + new command 'm'
+#   + nonstoppable lines do not have ':' near the line number.
+#   + 'b compile subname' implemented.
 #   + Will not use $` any more.
-#   + `-' behaves sane now.
-# Changes: 0.99: Completion for `f', `m'.
-#   +  `m' will remove duplicate names instead of duplicate functions.
-#   + `b load' strips trailing whitespace.
-#     completion ignores leading `|'; takes into account current package
-#     when completing a subroutine name (same for `l').
+#   + '-' behaves sane now.
+# Changes: 0.99: Completion for 'f', 'm'.
+#   +  'm' will remove duplicate names instead of duplicate functions.
+#   + 'b load' strips trailing whitespace.
+#     completion ignores leading '|'; takes into account current package
+#     when completing a subroutine name (same for 'l').
 # Changes: 1.07: Many fixed by tchrist 13-March-2000
 #   BUG FIXES:
 #   + Added bare minimal security checks on perldb rc files, plus
@@ -829,7 +829,7 @@ sub eval {
 #   Minor bugs corrected;
 #   + Support for auto-creation of new TTY window on startup, either
 #     unconditionally, or if started as a kid of another debugger session;
-#   + New `O'ption CreateTTY
+#   + New 'O'ption CreateTTY
 #       I<CreateTTY>      bits control attempts to create a new TTY on events:
 #                         1: on fork()
 #                         2: debugger is started inside debugger
@@ -844,7 +844,7 @@ sub eval {
 #     function;
 #   + Consistent support for TTY names of the form "TTYin,TTYout";
 #   + Switch line-tracing output too to the created TTY window;
-#   + make `b fork' DWIM with CORE::GLOBAL::fork;
+#   + make 'b fork' DWIM with CORE::GLOBAL::fork;
 #   + High-level debugger API cmd_*():
 #      cmd_b_load($filenamepart)            # b load filenamepart
 #      cmd_b_line($lineno [, $cond])        # b lineno [cond]
@@ -1818,7 +1818,7 @@ and then call the C<afterinit()> subroutine if there is one.
                 $slave_editor ? "enabled" : "available", ".\n"
             );
             print $OUT
-"\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
+"\nEnter h or 'h h' for help, or '$doccmd perldebug' for more help.\n\n";
         } ## end else [ if ($term_pid eq '-1')
     } ## end unless ($runnonstop)
 } ## end else [ if ($notty)
@@ -2319,7 +2319,7 @@ completely replacing it.
                     eval "\$cmd =~ $alias{$i}";
                     if ($@) {
                         local $\ = '';
-                        print $OUT "Couldn't evaluate `$i' alias: $@";
+                        print $OUT "Couldn't evaluate '$i' alias: $@";
                         next CMD;
                     }
                 } ## end if ($alias{$i})
@@ -2510,7 +2510,7 @@ Just uses C<DB::methods> to determine what methods are available.
                         if ( ($try) = grep( m#^_<.*$file#, keys %main:: ) ) {
                             {
                                 $try = substr( $try, 2 );
-                                print $OUT "Choosing $try matching `$file':\n";
+                                print $OUT "Choosing $try matching '$file':\n";
                                 $file = $try;
                             }
                         } ## end if (($try) = grep(m#^_<.*$file#...
@@ -2518,7 +2518,7 @@ Just uses C<DB::methods> to determine what methods are available.
 
                     # If not successfully switched now, we failed.
                     if ( !defined $main::{ '_<' . $file } ) {
-                        print $OUT "No file matching `$file' is loaded.\n";
+                        print $OUT "No file matching '$file' is loaded.\n";
                         next CMD;
                     }
 
@@ -3271,7 +3271,7 @@ pick it up.
                     else {
 
                         # Couldn't open it.
-                        &warn("Can't execute `$1': $!\n");
+                        &warn("Can't execute '$1': $!\n");
                     }
                     next CMD;
                 };
@@ -3411,7 +3411,7 @@ reading another.
                     unless ( $piped = open( OUT, $pager ) ) {
 
                         # Couldn't open pipe to pager.
-                        &warn("Can't pipe output to `$pager'");
+                        &warn("Can't pipe output to '$pager'");
                         if ( $pager =~ /^\|/ ) {
 
                             # Redirect I/O back again.
@@ -3515,7 +3515,7 @@ our standard filehandles for input and output.
                     # most of the $? crud was coping with broken cshisms
                     # $? is explicitly set to 0, so this never runs.
                     if ($?) {
-                        print SAVEOUT "Pager `$pager' failed: ";
+                        print SAVEOUT "Pager '$pager' failed: ";
                         if ( $? == -1 ) {
                             print SAVEOUT "shell returned -1\n";
                         }
@@ -3569,7 +3569,7 @@ again.
 =cut
 
         # No more commands? Quit.
-        $fall_off_end = 1 unless defined $cmd;    # Emulate `q' on EOF
+        $fall_off_end = 1 unless defined $cmd;    # Emulate 'q' on EOF
 
         # Evaluate post-prompt commands.
         foreach $evalarg (@$post) {
@@ -4290,7 +4290,7 @@ sub cmd_b_load {
     # Normalize for the purposes of our printing this.
     local $\ = '';
     local $" = ' ';
-    print $OUT "Will stop on load of `@files'.\n";
+    print $OUT "Will stop on load of '@files'.\n";
 } ## end sub cmd_b_load
 
 =head3 C<$filename_error> (API package global)
@@ -4435,7 +4435,7 @@ sub breakable_line_in_filename {
     local *dbline = $main::{ '_<' . $f };
 
     # If there's an error, it's in this other file.
-    local $filename_error = " of `$f'";
+    local $filename_error = " of '$f'";
 
     # Find the breakable line.
     breakable_line(@_);
@@ -4528,7 +4528,7 @@ sub break_on_filename_line {
     local *dbline = $main::{ '_<' . $f };
 
     # Localize the variables that break_on_line uses to make its message.
-    local $filename_error = " of `$f'";
+    local $filename_error = " of '$f'";
     local $filename       = $f;
 
     # Add the breakpoint.
@@ -5579,7 +5579,7 @@ sub postponed_sub {
     } ## end if ($postponed{$subname...
     elsif ( $postponed{$subname} eq 'compile' ) { $signal = 1 }
 
-    #print $OUT "In postponed_sub for `$subname'.\n";
+    #print $OUT "In postponed_sub for '$subname'.\n";
 } ## end sub postponed_sub
 
 =head2 C<postponed>
@@ -5809,7 +5809,7 @@ sub print_trace {
         my $file = $sub[$i]{file};
 
         # Put in a filename header if short is off.
-        $file = $file eq '-e' ? $file : "file `$file'" unless $short;
+        $file = $file eq '-e' ? $file : "file '$file'" unless $short;
 
         # Get the actual sub's name, and shorten to $maxtrace's requirement.
         $s = $sub[$i]{sub};
@@ -6131,8 +6131,8 @@ sub setterm {
         if ($tty) {
             my ( $i, $o ) = split $tty, /,/;
             $o = $i unless defined $o;
-            open( IN,  "<$i" ) or die "Cannot open TTY `$i' for read: $!";
-            open( OUT, ">$o" ) or die "Cannot open TTY `$o' for write: $!";
+            open( IN,  "<$i" ) or die "Cannot open TTY '$i' for read: $!";
+            open( OUT, ">$o" ) or die "Cannot open TTY '$o' for write: $!";
             $IN  = \*IN;
             $OUT = \*OUT;
             my $sel = select($OUT);
@@ -6739,20 +6739,20 @@ sub parse_options {
 
         # Options are always all word characters, followed by a non-word
         # separator.
-        s/^(\w+)(\W?)// or print( $OUT "Invalid option `$_'\n" ), last;
+        s/^(\w+)(\W?)// or print( $OUT "Invalid option '$_'\n" ), last;
         my ( $opt, $sep ) = ( $1, $2 );
 
         # Make sure that such an option exists.
         my $matches = grep( /^\Q$opt/ && ( $option = $_ ), @options )
           || grep( /^\Q$opt/i && ( $option = $_ ), @options );
 
-        print( $OUT "Unknown option `$opt'\n" ), next unless $matches;
-        print( $OUT "Ambiguous option `$opt'\n" ), next if $matches > 1;
+        print( $OUT "Unknown option '$opt'\n" ), next unless $matches;
+        print( $OUT "Ambiguous option '$opt'\n" ), next if $matches > 1;
         my $val;
 
         # '?' as separator means query, but must have whitespace after it.
         if ( "?" eq $sep ) {
-            print( $OUT "Option query `$opt?' followed by non-space `$_'\n" ),
+            print( $OUT "Option query '$opt?' followed by non-space '$_'\n" ),
               last
               if /^\S/;
 
@@ -6790,7 +6790,7 @@ sub parse_options {
             my ($end) =
               "\\" . substr( ")]>}$sep", index( "([<{", $sep ), 1 );    #}
             s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)//
-              or print( $OUT "Unclosed option value `$opt$sep$_'\n" ), last;
+              or print( $OUT "Unclosed option value '$opt$sep$_'\n" ), last;
             ( $val = $1 ) =~ s/\\([\\$end])/$1/g;
         } ## end else [ if ("?" eq $sep)
 
@@ -6798,7 +6798,7 @@ sub parse_options {
         if ( $opt_needs_val{$option} && $val_defaulted ) {
             my $cmd = ( $CommandSet eq '580' ) ? 'o' : 'O';
             print $OUT
-"Option `$opt' is non-boolean.  Use `$cmd $option=VAL' to set, `$cmd $option?' to query\n";
+"Option '$opt' is non-boolean.  Use '$cmd $option=VAL' to set, '$cmd $option?' to query\n";
             next;
         } ## end if ($opt_needs_val{$option...
 
@@ -6939,7 +6939,7 @@ sub reset_IN_OUT {
 
     # This term can't get a new tty now. Better luck later.
     elsif ($term) {
-        &warn("Too late to set IN/OUT filehandles, enabled on next `R'!\n");
+        &warn("Too late to set IN/OUT filehandles, enabled on next 'R'!\n");
     }
 
     # Set the filehndles up as they were.
@@ -6994,8 +6994,8 @@ sub TTY {
         }
 
         # Open file onto the debugger's filehandles, if you can.
-        open IN,  $in     or die "cannot open `$in' for read: $!";
-        open OUT, ">$out" or die "cannot open `$out' for write: $!";
+        open IN,  $in     or die "cannot open '$in' for read: $!";
+        open OUT, ">$out" or die "cannot open '$out' for write: $!";
 
         # Swap to the new filehandles.
         reset_IN_OUT( \*IN, \*OUT );
@@ -7006,7 +7006,7 @@ sub TTY {
 
     # Terminal doesn't support new TTY, or doesn't support readline.
     # Can't do it now, try restarting.
-    &warn("Too late to set TTY, enabled on next `R'!\n") if $term and @_;
+    &warn("Too late to set TTY, enabled on next 'R'!\n") if $term and @_;
 
     # Useful if done through PERLDB_OPTS:
     $console = $tty = shift if @_;
@@ -7025,7 +7025,7 @@ we save the value to use it if we're restarted.
 
 sub noTTY {
     if ($term) {
-        &warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
+        &warn("Too late to set noTTY, enabled on next 'R'!\n") if @_;
     }
     $notty = shift if @_;
     $notty;
@@ -7042,7 +7042,7 @@ the value in case a restart is done so we can change it then.
 
 sub ReadLine {
     if ($term) {
-        &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
+        &warn("Too late to set ReadLine, enabled on next 'R'!\n") if @_;
     }
     $rl = shift if @_;
     $rl;
@@ -7091,7 +7091,7 @@ debugger remembers the setting in case you restart, though.
 
 sub NonStop {
     if ($term) {
-        &warn("Too late to set up NonStop mode, enabled on next `R'!\n")
+        &warn("Too late to set up NonStop mode, enabled on next 'R'!\n")
           if @_;
     }
     $runnonstop = shift if @_;
@@ -7215,7 +7215,7 @@ sub LineInfo {
     $slave_editor = ( $stream =~ /^\|/ );
 
     # Open it up and unbuffer it.
-    open( LINEINFO, "$stream" ) || &warn("Cannot open `$stream' for write");
+    open( LINEINFO, "$stream" ) || &warn("Cannot open '$stream' for write");
     $LINEINFO = \*LINEINFO;
     my $save = select($LINEINFO);
     $| = 1;
@@ -7444,7 +7444,7 @@ B<o> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ...
     During startup options are initialized from \$ENV{PERLDB_OPTS}.
     You can put additional initialization options I<TTY>, I<noTTY>,
     I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
-    `B<R>' after you set them).
+    B<R> after you set them).
 
 B<q> or B<^D>        Quit. Set B<\$DB::finished = 0> to debug global destruction.
 B<h>        Summary of debugger commands.
@@ -7454,7 +7454,7 @@ B<$doccmd> I<manpage>    Runs the external doc viewer B<$doccmd> command on the
         named Perl I<manpage>, or on B<$doccmd> itself if omitted.
         Set B<\$DB::doccmd> to change viewer.
 
-Type `|h h' for a paged display if this was too hard to read.
+Type '|h h' for a paged display if this was too hard to read.
 
 ";    # Fix balance of vi % matching: }}}}
 
@@ -7527,7 +7527,7 @@ B<b> [I<line>] [I<condition>]
 B<b> I<subname> [I<condition>]
         Set breakpoint at first line of subroutine.
 B<b> I<\$var>        Set breakpoint at first line of subroutine referenced by I<\$var>.
-B<b> B<load> I<filename> Set breakpoint on `require'ing the given file.
+B<b> B<load> I<filename> Set breakpoint on 'require'ing the given file.
 B<b> B<postpone> I<subname> [I<condition>]
         Set breakpoint at first line of subroutine after 
         it is compiled.
@@ -7620,7 +7620,7 @@ B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ...
     During startup options are initialized from \$ENV{PERLDB_OPTS}.
     You can put additional initialization options I<TTY>, I<noTTY>,
     I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
-    `B<R>' after you set them).
+    B<R> after you set them).
 
 B<q> or B<^D>        Quit. Set B<\$DB::finished = 0> to debug global destruction.
 B<h> [I<db_command>]    Get help [on a specific debugger command], enter B<|h> to page.
@@ -7629,7 +7629,7 @@ B<$doccmd> I<manpage>    Runs the external doc viewer B<$doccmd> command on the
         named Perl I<manpage>, or on B<$doccmd> itself if omitted.
         Set B<\$DB::doccmd> to change viewer.
 
-Type `|h' for a paged display if this was too hard to read.
+Type '|h' for a paged display if this was too hard to read.
 
 ";    # Fix balance of vi % matching: }}}}
 
@@ -8889,7 +8889,7 @@ Say we're done.
 
 sub end_report {
     local $\ = '';
-    print $OUT "Use `q' to quit or `R' to restart.  `h q' for details.\n";
+    print $OUT "Use 'q' to quit or 'R' to restart.  'h q' for details.\n";
 }
 
 =head2 clean_ENV
@@ -9599,7 +9599,7 @@ sub cmd_prepost {
     elsif ( $cmd =~ /^\{/o ) {
         if ( $cmd =~ /^\{.*\}$/o && unbalanced( substr( $cmd, 1 ) ) ) {
             print $OUT
-"$cmd is now a debugger command\nuse `;$cmd' if you mean Perl code\n";
+"$cmd is now a debugger command\nuse ';$cmd' if you mean Perl code\n";
         }
 
         # Properly balanced. Pre-prompt debugger actions.
@@ -9676,7 +9676,7 @@ the C<END> block documentation for more details.
 package DB::fake;
 
 sub at_exit {
-    "Debugged program terminated.  Use `q' to quit or `R' to restart.";
+    "Debugged program terminated.  Use 'q' to quit or 'R' to restart.";
 }
 
 package DB;    # Do not trace this 1; below!