Formatter for Superscript / Subscript

[NilsLindenberg]

Superscript and subscript (<sup>/<sub>)

(text higher or lower in the line than normal)

There are only simple changes needed to add wikka-formatters for superscript and subscript text; the bigger problem is the markup:

Nils:

• for superscript: ^^
• for subscript: vv (would be logical, but perhaps problematic?)

BlueNode: /\superscript/\ (forwardslash,backslash) \/subscript\/ (backslash,forwardslash)

Javawoman: Or what about two commas ,, for subscript?

Code Changes

Anyway, changes necessary to formatters/wakka.php: add to the list of static variables (after trigger_center = 0;)

        static $trigger_sup = 0;
        static $trigger_sub = 0;

add after if ($trigger_bold % 2) echo('</strong>');

            if ($trigger_sup % 2) echo '</sup>';
            if ($trigger_sub % 2) echo '</sub>';

change the long line a little below to:

            $trigger_bold = $trigger_center = $trigger_floatl = $trigger_inserted = $trigger_deleted = $trigger_italic = $trigger_keys = $trigger_sup = $trigger_sub = 0;

add after the //center block:

        // higher text
        else if ($thing == " ") // enter the markup 
        {
            return (++$trigger_sup % 2 ? "<sup>" : "</sup>");
        }
        // lowered text
        else if ($thing == "  ") // enter the markup 
        {
            return (++$trigger_sub % 2 ? "<sub>" : "</sub>");
        }

and finally the line with #Wiki Markup (near the end) needs to have the markup, too: (example with ^^ and vv)

"\*\*|\'\'|\#\#|\#\%|@@|::c::|\>\>|\<\<|&pound;&pound;|&yen;&yen;|\v\v|\^\^|\+\+|__|<|>|\/\/|".    # Wiki markup

Ref:  http://wikkawiki.org/WantedFormatters

[BrianKoontz]

Bumped to milestone 1.2 for further discussion.

[ydario]

Other wiki are using

^^ for superscript and ,, for subscript

e.g. see trac wiki or uniwakka. It will be nice to have same coding syntax (just to not get crazy while using different wikis).

[ydario]

This patch is against 1.1.6.3 source code, uses above tags for generating super/subscripts.

diff -urbB wiki.0/formatters/wakka.php wiki/formatters/wakka.php
--- wiki.0/formatters/wakka.php	Mon May  7 02:21:52 2007
+++ wiki/formatters/wakka.php	Mon Jun  4 17:50:54 2007
@@ -60,6 +60,8 @@
 		static $trigger_strike = 0;
 		static $trigger_inserted = 0;
 		static $trigger_center = 0;
+		static $trigger_subscript = 0;
+		static $trigger_superscript = 0;
 		static $trigger_l = array(-1, 0, 0, 0, 0, 0);
 		static $output = '';
 		static $valid_filename = '';
@@ -120,6 +122,16 @@
 		{
 			return (++$trigger_italic % 2 ? "<em>" : "</em>");
 		}
+		// subscript
+		else if ($thing == ",,")
+		{
+			return (++$trigger_subscript % 2 ? "<sub>" : "</sub>");
+		}
+		// superscript
+		else if ($thing == "^^")
+		{
+			return (++$trigger_superscript % 2 ? "<sup>" : "</sup>");
+		}
 		// underlinue
 		else if ($thing == "__")
 		{
@@ -435,6 +472,7 @@
 	"-{4,}|---|".																			# separator (hr)
 	"\b[a-z]+:\/\/\S+|".																	# URL
 	"\*\*|\'\'|\#\#|\#\%|@@|::c::|\>\>|\<\<|&pound;&pound;|&yen;&yen;|\+\+|__|<|>|\/\/|".	# Wiki markup
+	"\^\^|,,|".
 	"======|=====|====|===|==|".															# headings
 	"\n([\t~]+)(-|&|[0-9a-zA-Z]+\))?|".														# indents and lists
 	"\{\{.*?\}\}|".																			# action

[JavaWoman]

changing description to make intended code samples visible ;)