Extra GtkSourceView language definitions

A *.lang file is needed by GtkSourceView to support syntax highlighting for a certain language.

Sources of *.lang files:

• Look first at the upstream *.lang files shipped by GtkSourceView.

• This wiki page.

• GNOME's current issue tracker: https://gitlab.gnome.org/GNOME/gtksourceview/issues?label_name%5B%5D=0.+New+%2A.lang+file for new language definitions.

• GNOME's current issue tracker: https://gitlab.gnome.org/GNOME/gtksourceview/issues?label_name%5B%5D=0.%20Existing%20*.lang%20file for existing language definitions.

• GNOME's deprecated issue tracker: https://bugzilla.gnome.org/browse.cgi?product=gtksourceview under "New *.lang file"

• GMate

See the reference documentation to know how to write a language definition file.

List

• apache.lang: Apache configuration files, see also this bug report.

• apdl.lang: ANSYS APDL files.

• ascend.lang: ASCEND modelling environment.

• asm-intel.lang: Intel & AMD assembly, x86 & x86-64, Intel syntax.

• axe.lang: Axe Parser, a programming language for TI-83/TI-84 calculators.

• bioSyntax: Computational biology formats collection. SAM, VCF, PDB, FASTA (NT+AA), FASTQ, GTF + more. (lang files)

• cfengine2.lang: cfengine2 receipe files.

• cython.lang: Python extended with Cython-specific keywords and constants

• edifact.lang: UN/EDIFACT message definition.

• fasta.lang: FASTA biological sequence definition (DNA sequences only).

• Fortress.lang

• gnuplot.lang: gnuplot graphing utility

• golog.lang

• i386asm.lang: i386 AT&T syntax assembly language.

• imacros.lang: iMacros browser-based macro recorder

• kv.lang: Kivy's user interface design language

• latex.lang: alternative language file to replace the current one included by default; a more complete definition of LaTeX.

• logtalk.lang: Logtalk programming language.

• lout.lang: Lout document formatting system.

• maude.lang: Maude syntax highlighting.

• mustache.lang: Syntax highlighting for Mustache (see bug 741626).

• msc.lang: Syntax highlighting for mscgen (Message Sequence Charts generator)

• nasal.lang: Nasal, the FlightGear flight simulator scripting language.

• nix.lang: Nix language, the purely functional language manager.

• Pig Latin: For writing programs using Apache Pig for the Hadoop platform. Pig 0.12 support is included in GtkSourceView 3.16; use this link for older or newer versions of Pig.

• Ruby: Ruby and Ruby templating (erubis, tenjin...) hacks.

• rvt.lang: Rivet, Tcl for web server side scripting. Language file from the Tcl language file to highlight the markups "<?" and "?>".

• shader.lang: id Tech 3 shader scripts.

• tradacom.lang: Tradacom message definition.

• wml.lang: Wesnoth Markup Language.

• x12.lang: ANSI ASC X12 message definition.

• xkb.lang: xkb X11 keyboard definition files.

• xorg.conf.lang: xorg.conf files.

• dts.lang: Device Tree