De-dups fmt and reflows, closes #2740

doc/Type/Cool.pod6

@@ -642,19 +642,25 @@ Defined as:
 
     method fmt($format = '%s')
 
-Equivalent to calling L<sprintf|/routine/sprintf> with C<$format> as format and
-the invocant as the second argument. The C<$format> will be coerced to
+Uses C<$format> to return a formatted representation of the invocant; equivalent
+to calling L<sprintf|/routine/sprintf> with C<$format> as format and the
+invocant as the second argument. The C<$format> will be coerced to
 L<Stringy|/type/Stringy> and defaults to C<'%s'>.
 
+For more information about formats strings, see L<sprintf|/routine/sprintf>.
+
+    say 11.fmt('This Int equals %03d');         # OUTPUT: «This Int equals 011␤»
+    say '16'.fmt('Hexadecimal %x');             # OUTPUT: «Hexadecimal 10␤»
+
 =head2 routine ceiling
 
 Defined as:
 
     multi sub ceiling(Numeric(Cool))
     multi method ceiling
 
-Coerces the invocant (or in sub form, its argument) to L<Numeric|/type/Numeric>, and rounds it upwards to
-the nearest integer.
+Coerces the invocant (or in sub form, its argument) to L<Numeric|/type/Numeric>,
+and rounds it upwards to the nearest integer.
 
     say "1".ceiling;        # OUTPUT: «1␤»
     say "-0.9".ceiling;     # OUTPUT: «0␤»
@@ -680,9 +686,9 @@ Defined as:
     sub ord(Str(Cool))
     method ord()
 
-Coerces the invocant (or in sub form, its argument) to
-L<Str|/type/Str>, and returns the L<Unicode code point|https://en.wikipedia.org/wiki/Code_point> number of the first
-code point.
+Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and
+returns the L<Unicode code point|https://en.wikipedia.org/wiki/Code_point>
+number of the first code point.
 
     say 'a'.ord;            # OUTPUT: «97␤»
 
@@ -724,17 +730,22 @@ Mnemonic: turns an integer into a I<char>acter.
 
 Defined as:
 
-    sub chars(Str(Cool))
-    method chars()
+    multi sub chars(Cool $x)
+    multi sub chars(Str:D $x)
+    multi sub chars(str $x --> int)
+    method chars(--> Int:D)
 
-Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and returns the
-number of characters in the string. Please note that on the JVM, you currently get
-codepoints instead of graphemes.
+Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and
+returns the number of characters in the string. Please note that on the JVM, you
+currently get codepoints instead of graphemes.
 
     say 'møp'.chars;    # OUTPUT: «3␤»
     say 'ã̷̠̬̊'.chars;     # OUTPUT: «1␤»
     say '👨‍👩‍👧‍👦🏿'.chars;    # OUTPUT: «1␤»
 
+If the string is native, the number of chars will be also returned as a native
+C<int>.
+
 X<|Grapheme>
 
 Graphemes are user visible characters. That is, this is what the user
@@ -764,8 +775,9 @@ Defined as:
     sub codes(Str(Cool))
     method codes()
 
-Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and returns the number of
-L<Unicode code points|https://en.wikipedia.org/wiki/Code_point>.
+Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and
+returns the number of L<Unicode code
+points|https://en.wikipedia.org/wiki/Code_point>.
 
     say 'møp'.codes;    # OUTPUT: «3␤»
 
@@ -779,10 +791,11 @@ L<ords|/routine/ords> first obtains the actual codepoints, so there might be a d
 
 Defined as:
 
-    sub flip(Str(Cool))
+    sub flip(Cool $s --> Str:D)
     method flip()
 
-Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and returns a reversed version.
+Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and
+returns a reversed version.
 
     say 421.flip;       # OUTPUT: «124␤»
 
@@ -793,8 +806,8 @@ Defined as:
     sub trim(Str(Cool))
     method trim()
 
-Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and returns the string with both
-leading and trailing whitespace stripped.
+Coerces the invocant (or in sub form, its argument) to L<Str|/type/Str>, and
+returns the string with both leading and trailing whitespace stripped.
 
     my $stripped = '  abc '.trim;
     say "<$stripped>";          # OUTPUT: «<abc>␤»
@@ -1343,19 +1356,6 @@ Defined as:
 Coerces the invocant to L<Str|/type/Str> and calls the method
 L<match|/type/Str#method_match> on it.
 
-=head2 method fmt
-
-Defined as:
-
-    method fmt($format = '%s' --> Str:D)
-
-Uses C<$format> to return a formatted representation of the invocant.
-
-For more information about formats strings, see L<sprintf|/routine/sprintf>.
-
-    say 11.fmt('This Int equals %03d');               # OUTPUT: «This Int equals 011␤»
-    say '16'.fmt('Hexadecimal %x');                   # OUTPUT: «Hexadecimal 10␤»
-
 =head2 routine roots
 
 Defined as: