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18 18​
19I could even start a new 19​I could even start a new
20one-line comment. 20​one-line comment.
21 21​
22-} 22​-}
23 23​
24a data definition 24​a data definition
25 25​
26<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">data</span> <span style="color:#0057ae;">Tree</span> a <span style="color:#644a9b;">=</span> <span style="color:#0057ae;">Br</span> (<span style="color:#0057ae;">Tree</span> a) (<span style="color:#0057ae;">Tree</span> a) <span style="color:#644a9b;">|</span> <span style="color:#0057ae;">Leaf</span> a <span style="color:#644a9b;">|</span> <span style="color:#0057ae;">Nil</span> <span style="font-weight:bold;">deriving</span> (<span style="color:#0057ae;">Show</span>, <span style="color:#0057ae;">Eq</span>) 26​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">data</span> <span style="color:#0057ae;">Tree</span> a = <span style="color:#0057ae;">Br</span> (<span style="color:#0057ae;">Tree</span> a) (<span style="color:#0057ae;">Tree</span> a) | <span style="color:#0057ae;">Leaf</span> a | <span style="color:#0057ae;">Nil</span> <span style="font-weight:bold;">deriving</span> (<span style="color:#0057ae;">Show</span>, <span style="color:#0057ae;">Eq</span>)
27 27​
28 28​
29function definition, &quot;funnyfunction::&quot;, &quot;Integer&quot;, &quot;Int&quot;, &quot;Bool&quot; should be highlighted 29​function definition, &quot;funnyfunction::&quot;, &quot;Integer&quot;, &quot;Int&quot;, &quot;Bool&quot; should be highlighted
30 30​
31<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> funnyfunction</span><span style="color:#006e28;">::</span>(<span style="color:#0057ae;">Tree</span> a)<span style="color:#006e28;">=&gt;</span>[a]<span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Integer</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Bool</span> 31​<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> funnyfunction</span><span style="color:#006e28;">::</span>(<span style="color:#0057ae;">Tree</span> a)<span style="color:#006e28;">=&gt;</span>[a]<span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Integer</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Bool</span>
32 32​
33 33​
34strings and chars 34​strings and chars
35first line of function definitions (type declaration) should be highlighted 35​first line of function definitions (type declaration) should be highlighted
36 36​
37<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> strangefunction</span><span style="color:#006e28;">::</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">String</span> 37​<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> strangefunction</span><span style="color:#006e28;">::</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">String</span>
38<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">1</span> <span style="color:#644a9b;">=</span> <span style="color:#bf0303;">&quot;hello&quot;</span> 38​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">1</span> = <span style="color:#bf0303;">&quot;hello&quot;</span>
39<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">2</span> <span style="color:#644a9b;">=</span> <span style="color:#bf0303;">&quot;what's up&quot;</span> 39​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">2</span> = <span style="color:#bf0303;">&quot;what's up&quot;</span>
40<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">3</span> <span style="color:#644a9b;">=</span> (strangefunction <span style="color:#b08000;">1</span>) <span style="color:#644a9b;">++</span> <span style="color:#bf0303;">&quot;, &quot;</span> <span style="color:#644a9b;">++</span> (strangefunction <span style="color:#b08000;">2</span>) 40​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">3</span> = (strangefunction <span style="color:#b08000;">1</span>) ++ <span style="color:#bf0303;">&quot;, &quot;</span> ++ (strangefunction <span style="color:#b08000;">2</span>)
41<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">4</span> <span style="color:#644a9b;">=</span> <span style="color:#924c9d;">'a'</span><span style="color:#644a9b;">:</span><span style="color:#924c9d;">'b'</span><span style="color:#644a9b;">:</span><span style="color:#924c9d;">'c'</span><span style="color:#644a9b;">:</span><span style="color:#924c9d;">'&quot;'</span><span style="color:#644a9b;">:</span>[] <span style="color:#898887;">-- will return &quot;abc&quot;</span> 41​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">4</span> = <span style="color:#924c9d;">'a'</span>:<span style="color:#924c9d;">'b'</span>:<span style="color:#924c9d;">'c'</span>:<span style="color:#924c9d;">'&quot;'</span>:[] <span style="color:#898887;">-- will return &quot;abc&quot;</span>
42<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">5</span> <span style="color:#644a9b;">=</span> <span style="color:#924c9d;">'\n'</span><span style="color:#644a9b;">:</span>[] 42​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">5</span> = <span style="color:#924c9d;">'\n'</span>:[]
43<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">6</span> <span style="color:#644a9b;">=</span> <span style="color:#924c9d;">'\invalidhaskell'</span><span style="color:#644a9b;">:</span>[] 43​<span style="color:#006e28;">&gt;</span> strangefunction <span style="color:#b08000;">6</span> = <span style="color:#924c9d;">'\invalidhaskell'</span>:[]
44 44​
45function name including the single quote character 45​function name including the single quote character
46and infix operator (`div`) 46​and infix operator (`div`)
47 47​
48<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> justtesting'</span><span style="color:#006e28;">::</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Int</span> 48​<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> justtesting'</span><span style="color:#006e28;">::</span><span style="color:#0057ae;">Int</span><span style="color:#006e28;">-&gt;</span><span style="color:#0057ae;">Int</span>
49<span style="color:#006e28;">&gt;</span> justtesting' <span style="color:#b08000;">2</span> <span style="color:#644a9b;">=</span> <span style="color:#b08000;">2</span><span style="color:#644a9b;">+</span><span style="color:#b08000;">1</span> 49​<span style="color:#006e28;">&gt;</span> justtesting' <span style="color:#b08000;">2</span> = <span style="color:#b08000;">2</span>+<span style="color:#b08000;">1</span>
50<span style="color:#006e28;">&gt;</span> justtesting' <span style="color:#b08000;">9</span> <span style="color:#644a9b;">=</span> <span style="color:#b08000;">7</span> <span style="color:#006e28;">`div`</span> <span style="color:#b08000;">2</span> 50​<span style="color:#006e28;">&gt;</span> justtesting' <span style="color:#b08000;">9</span> = <span style="color:#b08000;">7</span> <span style="color:#006e28;">`div`</span> <span style="color:#b08000;">2</span>
51 51​
52same definition as above, slightly different function name and a couple more whitespaces 52​same definition as above, slightly different function name and a couple more whitespaces
53 53​
54<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> justtesting'' </span><span style="color:#006e28;">::</span> <span style="color:#0057ae;">Int</span> <span style="color:#006e28;">-&gt;</span> <span style="color:#0057ae;">Int</span> 54​<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> justtesting'' </span><span style="color:#006e28;">::</span> <span style="color:#0057ae;">Int</span> <span style="color:#006e28;">-&gt;</span> <span style="color:#0057ae;">Int</span>
55<span style="color:#006e28;">&gt;</span> justtesting'' <span style="color:#b08000;">2</span> <span style="color:#644a9b;">=</span> <span style="color:#b08000;">3</span> 55​<span style="color:#006e28;">&gt;</span> justtesting'' <span style="color:#b08000;">2</span> = <span style="color:#b08000;">3</span>
56<span style="color:#006e28;">&gt;</span> justtesting'' <span style="color:#b08000;">9</span> <span style="color:#644a9b;">=</span> <span style="color:#b08000;">3</span> <span style="color:#644a9b;">+</span> <span style="color:#b08000;">9</span> <span style="color:#644a9b;">-</span> <span style="color:#b08000;">9</span> 56​<span style="color:#006e28;">&gt;</span> justtesting'' <span style="color:#b08000;">9</span> = <span style="color:#b08000;">3</span> + <span style="color:#b08000;">9</span> - <span style="color:#b08000;">9</span>
57 57​
58the following lines are copied out of Haskell's &quot;Prelude.hs&quot; 58​the following lines are copied out of Haskell's &quot;Prelude.hs&quot;
59 59​
60<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">infixl</span> <span style="color:#b08000;">7</span> <span style="color:#644a9b;">*</span>, <span style="color:#644a9b;">/</span>, <span style="color:#006e28;">`quot`</span>, <span style="color:#006e28;">`rem`</span>, <span style="color:#006e28;">`div`</span>, <span style="color:#006e28;">`mod`</span>, <span style="color:#644a9b;">:%</span>, <span style="color:#644a9b;">%</span> 60​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">infixl</span> <span style="color:#b08000;">7</span> *, /, <span style="color:#006e28;">`quot`</span>, <span style="color:#006e28;">`rem`</span>, <span style="color:#006e28;">`div`</span>, <span style="color:#006e28;">`mod`</span>, :%, %
61 61​
62 62​
63everything highlighted except the &quot;a&quot; 63​everything highlighted except the &quot;a&quot;
64 64​
65<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">class</span> <span style="color:#0057ae;">Bounded</span> a <span style="font-weight:bold;">where</span> 65​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">class</span> <span style="color:#0057ae;">Bounded</span> a <span style="font-weight:bold;">where</span>
66<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">minBound</span>,<span style="color:#006e28;"> maxBound </span><span style="color:#006e28;">::</span> a 66​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">minBound</span>,<span style="color:#006e28;"> maxBound </span><span style="color:#006e28;">::</span> a
67 67​
68<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">class</span> (<span style="color:#0057ae;">Num</span> a, <span style="color:#0057ae;">Ord</span> a) <span style="color:#006e28;">=&gt;</span> <span style="color:#0057ae;">Real</span> a <span style="font-weight:bold;">where</span> 68​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">class</span> (<span style="color:#0057ae;">Num</span> a, <span style="color:#0057ae;">Ord</span> a) <span style="color:#006e28;">=&gt;</span> <span style="color:#0057ae;">Real</span> a <span style="font-weight:bold;">where</span>
69<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> toRational </span><span style="color:#006e28;">::</span> a <span style="color:#006e28;">-&gt;</span> <span style="color:#0057ae;">Rational</span> 69​<span style="color:#006e28;">&gt;</span><span style="color:#006e28;"> toRational </span><span style="color:#006e28;">::</span> a <span style="color:#006e28;">-&gt;</span> <span style="color:#0057ae;">Rational</span>
70 70​
71finally, some keyword lists 71​finally, some keyword lists
72 72​
73keywords 73​keywords
74 74​
75<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">case</span>, <span style="font-weight:bold;">class</span>, <span style="font-weight:bold;">data</span>, <span style="font-weight:bold;">deriving</span>, <span style="font-weight:bold;">do</span>, <span style="font-weight:bold;">else</span>, <span style="font-weight:bold;">if</span>, <span style="font-weight:bold;">in</span>, <span style="font-weight:bold;">infixl</span>, <span style="font-weight:bold;">infixr</span>, <span style="font-weight:bold;">instance</span>, <span style="font-weight:bold;">let</span>, <span style="font-weight:bold;">module</span>, <span style="font-weight:bold;">of</span>, <span style="font-weight:bold;">primitive</span>, 75​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">case</span>, <span style="font-weight:bold;">class</span>, <span style="font-weight:bold;">data</span>, <span style="font-weight:bold;">deriving</span>, <span style="font-weight:bold;">do</span>, <span style="font-weight:bold;">else</span>, <span style="font-weight:bold;">if</span>, <span style="font-weight:bold;">in</span>, <span style="font-weight:bold;">infixl</span>, <span style="font-weight:bold;">infixr</span>, <span style="font-weight:bold;">instance</span>, <span style="font-weight:bold;">let</span>, <span style="font-weight:bold;">module</span>, <span style="font-weight:bold;">of</span>, <span style="font-weight:bold;">primitive</span>,
76<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">then</span>, <span style="font-weight:bold;">type</span>, <span style="font-weight:bold;">where</span> 76​<span style="color:#006e28;">&gt;</span> <span style="font-weight:bold;">then</span>, <span style="font-weight:bold;">type</span>, <span style="font-weight:bold;">where</span>
77 77​
78infix operators 78​infix operators
79 79​
80<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">quot</span>, <span style="color:#644a9b;">rem</span>, <span style="color:#644a9b;">div</span>, <span style="color:#644a9b;">mod</span>, <span style="color:#644a9b;">elem</span>, <span style="color:#644a9b;">notElem</span>, <span style="color:#644a9b;">seq</span> 80​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">quot</span>, <span style="color:#644a9b;">rem</span>, <span style="color:#644a9b;">div</span>, <span style="color:#644a9b;">mod</span>, <span style="color:#644a9b;">elem</span>, <span style="color:#644a9b;">notElem</span>, <span style="color:#644a9b;">seq</span>
81 81​
82this stuff is not handled yet 82​this stuff is not handled yet
83 83​
84<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">!!</span>, <span style="color:#644a9b;">%</span>, <span style="color:#644a9b;">&amp;&amp;</span>, <span style="color:#644a9b;">$!</span>, <span style="color:#644a9b;">$</span>, <span style="color:#644a9b;">*</span>, <span style="color:#644a9b;">**</span>, <span style="color:#644a9b;">-</span>,<span style="color:#644a9b;">.</span>, <span style="color:#644a9b;">/=</span>, <span style="color:#644a9b;">&lt;</span>, <span style="color:#644a9b;">&lt;=</span>, <span style="color:#644a9b;">=&lt;&lt;</span>, <span style="color:#644a9b;">==</span>, <span style="color:#644a9b;">&gt;</span>, <span style="color:#644a9b;">&gt;=</span>, <span style="color:#644a9b;">&gt;&gt;</span>, <span style="color:#644a9b;">&gt;&gt;=</span>, <span style="color:#644a9b;">^</span>, <span style="color:#644a9b;">^^</span>, <span style="color:#644a9b;">++</span>, <span style="color:#644a9b;">||</span> 84​<span style="color:#006e28;">&gt;</span> !!, %, &amp;&amp;, $!, $, *, **, -,., /=, &lt;, &lt;=, =&lt;&lt;, ==, &gt;, &gt;=, &gt;&gt;, &gt;&gt;=, ^, ^^, ++, ||
85 85​
86functions 86​functions
87 87​
88<span style="color:#006e28;">&gt;</span> <span style="color:#0057ae;">FilePath</span>, <span style="color:#0057ae;">IOError</span>, <span style="color:#644a9b;">abs</span>, <span style="color:#644a9b;">acos</span>, <span style="color:#644a9b;">acosh</span>, <span style="color:#644a9b;">all</span>, <span style="color:#644a9b;">and</span>, <span style="color:#644a9b;">any</span>, <span style="color:#644a9b;">appendFile</span>, 88​<span style="color:#006e28;">&gt;</span> <span style="color:#0057ae;">FilePath</span>, <span style="color:#0057ae;">IOError</span>, <span style="color:#644a9b;">abs</span>, <span style="color:#644a9b;">acos</span>, <span style="color:#644a9b;">acosh</span>, <span style="color:#644a9b;">all</span>, <span style="color:#644a9b;">and</span>, <span style="color:#644a9b;">any</span>, <span style="color:#644a9b;">appendFile</span>,
89<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">approxRational</span>, <span style="color:#644a9b;">asTypeOf</span>, <span style="color:#644a9b;">asin</span>, <span style="color:#644a9b;">asinh</span>, <span style="color:#644a9b;">atan</span>, <span style="color:#644a9b;">atan2</span>, <span style="color:#644a9b;">atanh</span>, <span style="color:#644a9b;">basicIORun</span>, 89​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">approxRational</span>, <span style="color:#644a9b;">asTypeOf</span>, <span style="color:#644a9b;">asin</span>, <span style="color:#644a9b;">asinh</span>, <span style="color:#644a9b;">atan</span>, <span style="color:#644a9b;">atan2</span>, <span style="color:#644a9b;">atanh</span>, <span style="color:#644a9b;">basicIORun</span>,
90<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">break</span>, <span style="color:#644a9b;">catch</span>, <span style="color:#644a9b;">ceiling</span>, <span style="color:#644a9b;">chr</span>, <span style="color:#644a9b;">compare</span>, <span style="color:#644a9b;">concat</span>, <span style="color:#644a9b;">concatMap</span>, <span style="color:#644a9b;">const</span>, <span style="color:#644a9b;">cos</span>, <span style="color:#644a9b;">cosh</span>, 90​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">break</span>, <span style="color:#644a9b;">catch</span>, <span style="color:#644a9b;">ceiling</span>, <span style="color:#644a9b;">chr</span>, <span style="color:#644a9b;">compare</span>, <span style="color:#644a9b;">concat</span>, <span style="color:#644a9b;">concatMap</span>, <span style="color:#644a9b;">const</span>, <span style="color:#644a9b;">cos</span>, <span style="color:#644a9b;">cosh</span>,
91<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">curry</span>, <span style="color:#644a9b;">cycle</span>, <span style="color:#644a9b;">decodeFloat</span>, <span style="color:#644a9b;">denominator</span>, <span style="color:#644a9b;">digitToInt</span>, <span style="color:#644a9b;">div</span>, <span style="color:#644a9b;">divMod</span>, <span style="color:#644a9b;">drop</span>, 91​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">curry</span>, <span style="color:#644a9b;">cycle</span>, <span style="color:#644a9b;">decodeFloat</span>, <span style="color:#644a9b;">denominator</span>, <span style="color:#644a9b;">digitToInt</span>, <span style="color:#644a9b;">div</span>, <span style="color:#644a9b;">divMod</span>, <span style="color:#644a9b;">drop</span>,
92<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">dropWhile</span>, <span style="color:#644a9b;">either</span>, <span style="color:#644a9b;">elem</span>, <span style="color:#644a9b;">encodeFloat</span>, <span style="color:#644a9b;">enumFrom</span>, <span style="color:#644a9b;">enumFromThen</span>, 92​<span style="color:#006e28;">&gt;</span> <span style="color:#644a9b;">dropWhile</span>, <span style="color:#644a9b;">either</span>, <span style="color:#644a9b;">elem</span>, <span style="color:#644a9b;">encodeFloat</span>, <span style="color:#644a9b;">enumFrom</span>, <span style="color:#644a9b;">enumFromThen</span>,
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