From b092ffbcbe2c9398494f7dc9db6f0796971633e0 Mon Sep 17 00:00:00 2001
From: Rob Austein <sra@hactrn.net>
Date: Sun, 13 Sep 2020 23:04:30 +0000
Subject: Import Cryptech wiki dump

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+= Wiki Processors
+
+Processors are WikiMacros designed to provide alternative markup formats for the [TracWiki Wiki engine]. Processors can be thought of as ''macro functions to process user-edited text''. 
+
+Wiki processors can be used in any Wiki text throughout Trac, such as:
+ - [#CodeHighlightingSupport syntax highlighting] or for rendering text verbatim
+ - rendering [#HTMLrelated Wiki markup inside a context], like inside <div> blocks or <span> or within <td> or <th> table cells
+ - using an alternative markup syntax, like [WikiHtml raw HTML] and [WikiRestructuredText Restructured Text] or [http://www.textism.com/tools/textile/ textile]
+
+== Using Processors
+
+To use a processor on a block of text, first delimit the lines using a Wiki ''code block'':
+{{{
+{{{
+The lines
+that should be processed...
+}}}
+}}}
+
+Immediately after the `{{{` or on the line just below, add `#!` followed by the ''processor name'':
+
+{{{
+{{{
+#!processorname
+The lines
+that should be processed...
+}}}
+}}}
+
+This is the "shebang" notation, familiar to most UNIX users.
+
+Besides their content, some Wiki processors can also accept ''parameters'', which are then given as `key=value` pairs after the processor name and on the same line. If `value` has to contain space, as it's often the case for the style parameter, a quoted string can be used (`key="value with space"`).
+
+As some processors are meant to process Wiki markup, it's quite possible to ''nest'' processor blocks.
+You may want to indent the content of nested blocks for increased clarity, this extra indentation will be ignored when processing the content.
+
+== Examples
+
+||= Wiki Markup =||= Display =||
+{{{#!td colspan=2 align=center style="border: none"
+
+                __Example 1__: Inserting raw HTML
+}}}
+|-----------------------------------------------------------------
+{{{#!td style="border: none"
+{{{
+{{{
+#!html
+<h1 style="color: grey">This is raw HTML</h1>
+}}}
+}}}
+}}}
+{{{#!td valign=top style="border: none; padding-left: 2em"
+{{{
+#!html
+<h1 style="color: grey">This is raw HTML</h1>
+}}}
+}}}
+|-----------------------------------------------------------------
+{{{#!td colspan=2 align=center style="border: none"
+
+     __Example 2__: Highlighted Python code in a <div> block with custom style
+}}}
+|-----------------------------------------------------------------
+{{{#!td style="border: none"
+  {{{
+  {{{#!div style="background: #ffd; border: 3px ridge"
+
+  This is an example of embedded "code" block:
+
+    {{{
+    #!python
+    def hello():
+        return "world"
+    }}}
+
+  }}}
+  }}}
+}}}
+{{{#!td valign=top style="border: none; padding: 1em"
+  {{{#!div style="background: #ffd; border: 3px ridge"
+
+  This is an example of embedded "code" block:
+
+    {{{
+    #!python
+    def hello():
+        return "world"
+    }}}
+
+  }}}
+}}}
+|-----------------------------------------------------------------
+{{{#!td colspan=2 align=center style="border: none"
+
+     __Example 3__: Searching tickets from a wiki page, by keywords.
+}}}
+|-----------------------------------------------------------------
+{{{#!td style="border: none"
+  {{{
+  {{{
+  #!html
+  <form action="/query" method="get"><div>
+  <input type="text" name="keywords" value="~" size="30"/>
+  <input type="submit" value="Search by Keywords"/>
+  <!-- To control what fields show up use hidden fields
+  <input type="hidden" name="col" value="id"/>
+  <input type="hidden" name="col" value="summary"/>
+  <input type="hidden" name="col" value="status"/>
+  <input type="hidden" name="col" value="milestone"/>
+  <input type="hidden" name="col" value="version"/>
+  <input type="hidden" name="col" value="owner"/>
+  <input type="hidden" name="col" value="priority"/>
+  <input type="hidden" name="col" value="component"/>
+  -->
+  </div></form>
+  }}}
+  }}}
+}}}
+{{{#!td valign=top style="border: none; padding: 1em"
+  {{{
+  #!html
+  <form action="/query" method="get"><div>
+  <input type="text" name="keywords" value="~" size="30"/>
+  <input type="submit" value="Search by Keywords"/>
+  <!-- To control what fields show up use hidden fields
+  <input type="hidden" name="col" value="id"/>
+  <input type="hidden" name="col" value="summary"/>
+  <input type="hidden" name="col" value="status"/>
+  <input type="hidden" name="col" value="milestone"/>
+  <input type="hidden" name="col" value="version"/>
+  <input type="hidden" name="col" value="owner"/>
+  <input type="hidden" name="col" value="priority"/>
+  <input type="hidden" name="col" value="component"/>
+  -->
+  </div></form>
+  }}}
+}}}
+
+== Available Processors
+
+The following processors are included in the Trac distribution:
+
+|| '''`#!default`''' || Present the text verbatim in a preformatted text block. This is the same as specifying ''no'' processor name (and no `#!`). ||
+|| '''`#!comment`''' || Do not process the text in this section, i.e. contents exist only in the plain text - not in the rendered page. ||
+|| '''`#!rtl`''' || Introduce a Right-To-Left block with appropriate CSS direction and styling. ''(since 0.12.2)'' ||
+|||| ||
+||||= '''[=#HTMLrelated HTML related]''' =||
+|| '''`#!html`''' || Insert custom HTML in a wiki page. ||
+|| '''`#!htmlcomment`''' || Insert an HTML comment in a wiki page. (''since 0.12'') ||
+|| || Note that `#!html` blocks have to be ''self-contained'', i.e. you can't start an HTML element in one block and close it later in a second block. Use the following processors for achieving a similar effect.  ||
+|| '''`#!div`''' || Wrap wiki content inside a <div> element. ||
+|| '''`#!span`''' || Wrap wiki content inside a <span> element. ||
+|| '''`#!td`''' || Wrap wiki content inside a <td> element. (''since 0.12'') ||
+|| '''`#!th`''' || Wrap wiki content inside a <th> element. (''since 0.12'') ||
+|| '''`#!tr`''' || Can optionally be used for wrapping `#!td` and `#!th` blocks, either for specifying row attributes or better visual grouping. (''since 0.12'') ||
+|| '''`#!table`''' || Can optionally be used for wrapping `#!tr`, `#!td` and `#!th` blocks, for specifying table attributes. One current limitation however is that tables cannot be nested. (''since 0.12'') || 
+|| || See WikiHtml for example usage and more details about these processors. ||
+|||| ||
+||||= '''Other Markups''' =||
+|| '''`#!rst`''' || Trac support for Restructured Text. See WikiRestructuredText. ||
+|| '''`#!textile`''' || Supported if [http://cheeseshop.python.org/pypi/textile Textile] is installed. See [http://www.textism.com/tools/textile/ a Textile reference]. ||
+|||| ||
+||||= '''[=#CodeHighlightingSupport Code Highlighting Support]''' =||
+|| '''`#!c`''' [[BR]] '''`#!cpp`''' (C++) [[BR]] '''`#!python`''' [[BR]] '''`#!perl`''' [[BR]] '''`#!ruby`''' [[BR]] '''`#!php`''' [[BR]] '''`#!asp`''' [[BR]] '''`#!java`''' [[BR]] '''`#!js`''' (Javascript) [[BR]] '''`#!sql`''' [[BR]] '''`#!xml`''' (XML or HTML) [[BR]] '''`#!sh`''' (!Bourne/Bash shell) [[BR]] '''etc.''' [[BR]] || Trac includes processors to provide inline syntax highlighting for source code in various languages. [[BR]] [[BR]] Trac relies on [http://pygments.org Pygments] for syntax coloring. [[BR]] [[BR]] See TracSyntaxColoring for information about which languages are supported and how to enable support for more languages. ||
+|||| ||
+
+Since 1.1.2 the default, coding highlighting and MIME-type processors support the argument `lineno` for adding line numbering to the code block. When a value is specified, as in `lineno=3`, the numbering will start at the specified value. When used in combination with the `lineno` argument, the `marks` argument is also supported for highlighting lines. A single line number, set of line numbers and range of line numbers are allowed. For example, `marks=3`, `marks=3-6`, `marks=3,5,7` and `marks=3-5,7` are all allowed. The specified values are relative to the numbered lines, so if `lineno=2` is specified to start the line numbering at 2, `marks=2` will result in the first line being highlighted.
+
+Using the MIME type as processor, it is possible to syntax-highlight the same languages that are supported when browsing source code.
+
+||||= '''MIME Type Processors''' =||
+{{{#!tr
+{{{#!td
+Some examples:
+ {{{
+{{{#!text/html
+<h1>text</h1>
+}}}
+ }}}
+}}}
+{{{#!td
+The result will be syntax highlighted HTML code:
+ {{{#!text/html
+<h1>text</h1>
+ }}}
+
+The same is valid for all other [TracSyntaxColoring#SyntaxColoringSupport mime types supported].
+}}}
+}}}
+{{{#!td
+ {{{
+{{{#!diff
+--- Version 55
++++ Version 56
+@@ -115,8 +115,9 @@
+     name='TracHelloWorld', version='1.0',
+     packages=find_packages(exclude=['*.tests*']),
+-    entry_points = """
+-        [trac.plugins]
+-        helloworld = myplugs.helloworld
+-    """,
++    entry_points = {
++        'trac.plugins': [
++            'helloworld = myplugs.helloworld',
++        ],
++    },
+ )
+}}}
+ }}}
+}}}
+{{{#!td
+'''`#!diff`''' has a particularly nice renderer:
+ {{{#!diff
+--- Version 55
++++ Version 56
+@@ -115,8 +115,9 @@
+     name='TracHelloWorld', version='1.0',
+     packages=find_packages(exclude=['*.tests*']),
+-    entry_points = """
+-        [trac.plugins]
+-        helloworld = myplugs.helloworld
+-    """,
++    entry_points = {
++        'trac.plugins': [
++            'helloworld = myplugs.helloworld',
++        ],
++    },
+ )
+ }}}
+}}}
+
+Line numbers can be added to code blocks and lines can be highlighted //(since 1.1.2)//.
+{{{
+{{{#!python lineno=3 marks=3,9-10,16
+def expand_markup(stream, ctxt=None):
+    """A Genshi stream filter for expanding `genshi.Markup` events.
+
+    Note: Expansion may not be possible if the fragment is badly
+    formed, or partial.
+    """
+    for event in stream:
+        if isinstance(event[1], Markup):
+            try:
+                for subevent in HTML(event[1]):
+                    yield subevent
+            except ParseError:
+                yield event
+        else:
+            yield event
+}}}
+}}}
+{{{#!python lineno=3 marks=3,9-10,16
+def expand_markup(stream, ctxt=None):
+    """A Genshi stream filter for expanding `genshi.Markup` events.
+
+    Note: Expansion may not be possible if the fragment is badly
+    formed, or partial.
+    """
+    for event in stream:
+        if isinstance(event[1], Markup):
+            try:
+                for subevent in HTML(event[1]):
+                    yield subevent
+            except ParseError:
+                yield event
+        else:
+            yield event
+}}}
+
+For more processor macros developed and/or contributed by users, visit the [https://trac-hacks.org Trac Hacks] community site.
+
+Developing processors is no different from Wiki macros. In fact, they work the same way, only the usage syntax differs. See WikiMacros#DevelopingCustomMacros for more information.
+
+----
+See also: WikiMacros, WikiHtml, WikiRestructuredText, TracSyntaxColoring, WikiFormatting, TracGuide
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