Added Robot Framework plain text format (#2034)

This adds support for the Robot Framework plain text space separated format.
https://robotframework.org/robotframework/latest/RobotFrameworkUserGuide.html#plain-text-format

components.json

@@ -817,6 +817,11 @@
 			"title": "Roboconf",
 			"owner": "Golmote"
 		},
+		"robot-framework": {
+			"title": "Robot Framework",
+			"alias": "robot",
+			"owner": "RunDevelopment"
+		},
 		"ruby": {
 			"title": "Ruby",
 			"require": "clike",

components/prism-robot-framework.js

@@ -0,0 +1,104 @@
+(function (Prism) {
+
+	var comment = {
+		pattern: /(^[ \t]*| {2}|\t)#.*/m,
+		lookbehind: true,
+		greedy: true
+	};
+
+	var variable = {
+		pattern: /((?:^|[^\\])(?:\\{2})*)[$@&%]\{(?:[^{}\r\n]|\{[^{}\r\n]*\})*\}/,
+		lookbehind: true,
+		inside: {
+			'punctuation': /^[$@&%]\{|\}$/
+		}
+	};
+
+	function createSection(name, inside) {
+		var extendecInside = {};
+
+		extendecInside['section-header'] = {
+			pattern: /^ ?\*{3}.+?\*{3}/,
+			alias: 'keyword'
+		};
+
+		// copy inside tokens
+		for (var token in inside) {
+			extendecInside[token] = inside[token];
+		}
+
+		extendecInside['tag'] = {
+			pattern: /([\r\n](?:  |\t)[ \t]*)\[[-\w]+\]/,
+			lookbehind: true,
+			inside: {
+				'punctuation': /\[|\]/
+			}
+		};
+		extendecInside['variable'] = variable;
+		extendecInside['comment'] = comment;
+
+		return {
+			pattern: RegExp(/^ ?\*{3}[ \t]*<name>[ \t]*\*{3}(?:.|[\r\n](?!\*{3}))*/.source.replace(/<name>/g, name), 'im'),
+			alias: 'section',
+			inside: extendecInside
+		};
+	}
+
+
+	var docTag = {
+		pattern: /(\[Documentation\](?:  |\t)[ \t]*)(?![ \t]|#)(?:.|[ \t]*(?:\r\n?|\n)[ \t]*\.{3}[ \t]*)+/,
+		lookbehind: true,
+		alias: 'string'
+	};
+
+	var testNameLike = {
+		pattern: /([\r\n] ?)(?!#)(?:\S(?:[ \t]\S)*)+/,
+		lookbehind: true,
+		alias: 'function',
+		inside: {
+			'variable': variable
+		}
+	};
+
+	var testPropertyLike = {
+		pattern: /([\r\n](?:  |\t)[ \t]*)(?!\[|\.{3}|#)(?:\S(?:[ \t]\S)*)+/,
+		lookbehind: true,
+		inside: {
+			'variable': variable
+		}
+	};
+
+	Prism.languages['robot-framework'] = {
+		'settings': createSection('Settings', {
+			'documentation': {
+				pattern: /([\r\n] ?Documentation(?:  |\t)[ \t]*)(?![ \t]|#)(?:.|[ \t]*(?:\r\n?|\n)[ \t]*\.{3}[ \t]*)+/,
+				lookbehind: true,
+				alias: 'string'
+			},
+			'property': {
+				pattern: /([\r\n] ?)(?!\.{3}|#)(?:\S(?:[ \t]\S)*)+/,
+				lookbehind: true
+			}
+		}),
+		'variables': createSection('Variables'),
+		'test-cases': createSection('Test Cases', {
+			'test-name': testNameLike,
+			'documentation': docTag,
+			'property': testPropertyLike
+		}),
+		'keywords': createSection('Keywords', {
+			'keyword-name': testNameLike,
+			'documentation': docTag,
+			'property': testPropertyLike
+		}),
+		'tasks': createSection('Tasks', {
+			'task-name': testNameLike,
+			'documentation': docTag,
+			'property': testPropertyLike
+		}),
+		'comment': comment
+	};
+
+	Prism.languages.robot = Prism.languages['robot-framework'];
+
+}(Prism));

examples/prism-robot-framework.html

@@ -0,0 +1,21 @@
+<h2>Full example</h2>
+<pre><code>*** Settings ***
+Documentation    Example using the space separated plain text format.
+Library          OperatingSystem
+
+*** Variables ***
+${MESSAGE}       Hello, world!
+
+*** Test Cases ***
+My Test
+    [Documentation]    Example test
+    Log    ${MESSAGE}
+    My Keyword    /tmp
+
+Another Test
+    Should Be Equal    ${MESSAGE}    Hello, world!
+
+*** Keywords ***
+My Keyword
+    [Arguments]    ${path}
+    Directory Should Exist    ${path}</code></pre>

plugins/autoloader/prism-autoloader.js

@@ -153,6 +153,7 @@
 		"objectpascal": "pascal",
 		"px": "pcaxis",
 		"py": "python",
+		"robot": "robot-framework",
 		"rb": "ruby",
 		"trig": "turtle",
 		"ts": "typescript",

plugins/show-language/prism-show-language.js

@@ -118,6 +118,8 @@
 		"tsx": "React TSX",
 		"renpy": "Ren'py",
 		"rest": "reST (reStructuredText)",
+		"robot-framework": "Robot Framework",
+		"robot": "Robot Framework",
 		"rb": "Ruby",
 		"sas": "SAS",
 		"sass": "Sass (Sass)",