Syntax Highlighting for Haskell and HTML

*groff.vim* *ft-groff-syntax* The groff syntax file is a wrapper for |nroff.vim|, see the notes under that heading for examples of use and configuration. The purpose of this wrapper is to set up groff syntax extensions by setting the filetype from a |modeline| or in a personal filetype definitions file (see |filetype.txt|). HASKELL *haskell.vim* *lhaskell.vim* *ft-haskell-syntax* The Haskell syntax files support plain Haskell code as well as literate Haskell code, the latter in both Bird style and TeX style. The Haskell syntax highlighting will also highlight C preprocessor directives. If you want to highlight delimiter characters (useful if you have a light-coloured background), add to your vimrc: > :let hs_highlight_delimiters = 1 To treat True and False as keywords as opposed to ordinary identifiers, add: > :let hs_highlight_boolean = 1 To also treat the names of primitive types as keywords: > :let hs_highlight_types = 1 And to treat the names of even more relatively common types as keywords: > :let hs_highlight_more_types = 1 If you want to highlight the names of debugging functions, put in your vimrc: > :let hs_highlight_debug = 1 The Haskell syntax highlighting also highlights C preprocessor directives, and flags lines that start with # but are not valid directives as erroneous. This interferes with Haskell's syntax for operators, as they may start with #. If you want to highlight those as operators as opposed to errors, put in your vimrc: > :let hs_allow_hash_operator = 1 The syntax highlighting for literate Haskell code will try to automatically guess whether your literate Haskell code contains TeX markup or not, and correspondingly highlight TeX constructs or nothing at all. You can override this globally by putting in your vimrc > :let lhs_markup = none for no highlighting at all, or > :let lhs_markup = tex to force the highlighting to always try to highlight TeX markup. For more flexibility, you may also use buffer local versions of this variable, so e.g. > :let b:lhs_markup = tex will force TeX highlighting for a particular buffer. It has to be set before turning syntax highlighting on for the buffer or loading a file. HTML *html.vim* *ft-html-syntax* The coloring scheme for tags in the HTML file works as follows. The <> of opening tags are colored differently than the </> of a closing tag. This is on purpose! For opening tags the 'Function' color is used, while for closing tags the 'Identifier' color is used (See syntax.vim to check how those are defined for you) Known tag names are colored the same way as statements in C. Unknown tag names are colored with the same color as the <> or </> respectively which makes it easy to spot errors Note that the same is true for argument (or attribute) names. Known attribute names are colored differently than unknown ones. Some HTML tags are used to change the rendering of text. The following tags are recognized by the html.vim syntax coloring file and change the way normal text is shown: ( is used as an alias for , while as an alias for ), <H1> - <H6>, <HEAD>, <TITLE> and <A>, but only if used as a link (that is, it must include a href as in <A href="somefile.html">). If you want to change how such text is rendered, you must redefine the following syntax groups: - htmlBold - htmlBoldUnderline - htmlBoldUnderlineItalic - htmlUnderline - htmlUnderlineItalic - htmlItalic - htmlTitle for titles - htmlH1 - htmlH6 for headings To make this redefinition work you must redefine them all with the exception of the last two (htmlTitle and htmlH[1-6], which are optional) and define the following variable in your vimrc (this is due to the order in which the files are read during initialization) > :let html_my_rendering=1 If you'd like to see an example download mysyntax.vim at https://www.fleiner.com/vim/download.html You can also disable this rendering by adding

This section details syntax highlighting for Haskell and HTML. For Haskell, it covers options for highlighting delimiters, booleans, types, debug functions, and handling of operators with hash symbols, as well as controlling TeX markup in literate Haskell code. For HTML, it describes tag coloring, attribute naming, and customization options for rendering text within specific HTML tags (, , , etc.) by redefining syntax groups and setting the html_my_rendering variable.