# Syntax origin

Nothing on [[syntax|the syntax page]] is one language. Four independent parsers contribute to this wiki, and knowing which one owns a construct is usually what explains its quirks.

When two of them claim the same characters, DokuWiki connects syntax modes in ascending `getSort()` order and **the first match wins**. That single rule decides every collision listed below.

## DokuWiki core

Everything here is stock, in `inc/Parsing/ParserMode/`.

^ Syntax ^ Mode ^ Sort ^
| ''%%====== Heading ======%%'' | Header | 50 |
| ''%%//italic//%%'', ''%%__underline__%%'', ''%%''mono''%%'' | Formatting | 80–100 |
| ''%%<sub>%%'', ''%%<sup>%%'', ''%%<del>%%'' | Formatting | 110–130 |
| ''%%((footnote))%%'' | Footnote | 150 |
| ''%%[[page]]%%'', ''%%[[wp>page]]%%'' | Internallink | 300 |
| bare URLs | Externallink | 330 |
| ''%%<mail@example.com>%%'' | Emaillink | 340 |
| ''%%\\server\share%%'' | Windowssharelink | 350 |
| ''%%  * item%%'' (two-space bullet) | Listblock | 10 |
| ''%%^%%'' / ''%%|%%'' tables | Table | 60 |
| ''%%<code>%%'', ''%%<file>%%'' | Code, File | 200, 210 |
| two-space indent | Preformatted | 20 |
| ''%%%%''…''%%%%'', ''%%<nowiki>%%'' | Unformatted | 170 |
| ''%%\\%%'' plus a space | Linebreak | 140 |
| ''%%{{media.png}}%%'' | Media | 320 |
| ''%%{{rss>url}}%%'' | Rss | 310 |
| ''%%~~NOTOC~~%%'', ''%%~~NOCACHE~~%%'' | Notoc, Nocache | 30, 40 |
| smileys | Smiley + ''conf/smileys.conf'' | 230 |
| ''%%->%%'', ''%%(c)%%'', ''%%...%%'' | Entity + ''conf/entities.conf'' | 260 |
| ''%%640x480%%'' | Multiplyentity | 270 |
| curly quotes | Quotes | 280 |

So `((...))` is DokuWiki's own footnote syntax, not a Markdown import. Markdown has no footnotes here at all, and `[^1]` does nothing.

## markdowku

`lib/plugins/markdowku/syntax/` holds 26 components adding what DokuWiki lacks.

^ Syntax ^ Component ^ Sort ^
| ''%%# Heading%%'' | headeratx | 49 |
| Setext headings | headersetext | 49 |
| ''%%*italic*%%'', ''%%_italic_%%'' | italicasterisk, italicunderline | 79 |
| ''%%`code`%%'' | codespans1–5 | 95–99 |
| fenced ''%%```%%'' blocks | githubcodeblocks | 91 |
| ''%%[text](url)%%'' | anchorsinline | 102 |
| ''%%![alt](url)%%'' | imagesinline | 101 |
| ''%%<https://example.com>%%'' | autolinks | 102 |
| ''%%* item%%'' | ulists | 9 |
| ''%%1. item%%'' | olists | 9 |
| ''%%> quote%%'' | blockquotes | 219 |
| ''%%***%%'', ''%%___%%'' | hr | 8 |
| two trailing spaces | linebreak | 139 |
| ''%%\*%%'', ''%%\_%%'' escapes | escapespecialchars | 61 |

Three collisions are decided here, all of them invisible until they bite:

 - **''%%**bold**%%''** is claimed by markdowku's `boldasterisk` (69) one step ahead of core Formatting's `strong` (70). Same output, so nobody notices.
 - **''%%> quote%%''** is claimed by `blockquotes` (219) ahead of core `Quote` (220), which is why quotes here join lines without a space and refuse to nest.
 - **''%%- item%%''** is claimed by `ulists` (9) ahead of core `Listblock` (10), which is why DokuWiki's ordered-list dash renders as a bullet.

`references` and `anchorsreference` exist too, but reference-style links never resolve, hence the gotcha above.

## katex

In `lib/plugins/katex/`, `syntax/protect.php` (sort 65) only *protects* math from the wiki parser; `script.js` does the rendering in the browser.

^ Syntax ^ Handled by ^
| ''%%$x$%%'', ''%%$$x$$%%'' | protect.php, then KaTeX client-side |
| ''%%\NN%%''…''%%\CC%%'' | macros in ''conf/local.php'' |

At sort 65 it shadows markdowku's own `mathinline` (90) and `mathblock` (89), which never run. That is deliberate: the dollar signs must reach the browser untouched.

## texrender

`lib/plugins/texrender/` runs LaTeX server-side and inlines the SVG.

^ Syntax ^ Component ^ Sort ^
| ''%%\documentclass{standalone}%%'' … | figure.php | 88 |
| ''%%\tikz ... ;%%'' and ''%%\tikz{...}%%'' | inline.php | 89 |

## Local core patches

Not plugins, but modifications to DokuWiki itself, tracked in this installation's git repo.

^ Behaviour ^ Where ^
| gold links to ''%%(WIP)%%'' pages | ''inc/parser/xhtml.php'' |
| pages stored as ''.md'' | ''inc/init.php'' (''DOKU_EXT'') |
| WIP pages split out on the sitemap | ''inc/Ui/Index.php'' |
| ''math'', ''eqn'', ''latex_figure'' renderer methods | ''inc/parser/xhtml.php'', ''inc/parser/renderer.php'' |

## See also

 - [[syntax|Wiki syntax]]
 - [[list-of-syntaxes|List of syntaxes]]