MathML: support more functions and symbols.

- Support emellished identifiers,
- support more functions and symbols from "amsmath",
- map HYPHEN-MINUS -> MINUS SIGN and COLON -> RATIO im math context,
- simplify doctests with starred import,
- dont wrap content in <mrow> when it is inferred by an element
  (let these elements inherit from "mrow").

- tex2unichar: Fix/extend character mappings.

git-svn-id: https://svn.code.sf.net/p/docutils/code/trunk@8748 929543f6-e4f2-0310-98a6-ba3bd3dd1d04

1 files changed, 99 insertions, 131 deletions

diff --git a/docutils/test/functional/expected/math_output_mathml.html b/docutils/test/functional/expected/math_output_mathml.html
index 5cb03d5a1..d5f95a3bf 100644
--- a/docutils/test/functional/expected/math_output_mathml.html
+++ b/docutils/test/functional/expected/math_output_mathml.html
@@ -14,31 +14,27 @@
 
 <p>Docutils supports inline math with the prefix or postfix <span class="docutils literal">:math:</span>
 role specificator, <math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mi>n</mi><mo>!</mo><mo>+</mo><mi>sin</mi><mo>&ApplyFunction;</mo><mo stretchy="false">(</mo>
-    <msubsup>
-      <mi>x</mi><mi>n</mi><mn>2</mn>
-    </msubsup>
-    <mo stretchy="false">)</mo>
-  </mrow>
+  <mi>n</mi><mo>!</mo><mo>+</mo><mi>sin</mi><mo>&ApplyFunction;</mo><mo stretchy="false">(</mo>
+  <msubsup>
+    <mi>x</mi><mi>n</mi><mn>2</mn>
+  </msubsup>
+  <mo stretchy="false">)</mo>
 </math> and <math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <msub>
-      <mi>A</mi><mtext>c</mtext>
-    </msub>
-    <mo>=</mo>
-    <mfrac>
-      <mrow>
-        <mi>π</mi>
-      </mrow>
-      <mrow>
-        <mn>4</mn>
-      </mrow>
-    </mfrac>
-    <msup>
-      <mi>d</mi><mn>2</mn>
-    </msup>
-  </mrow>
+  <msub>
+    <mi>A</mi><mtext>c</mtext>
+  </msub>
+  <mo>=</mo>
+  <mfrac>
+    <mrow>
+      <mi>π</mi>
+    </mrow>
+    <mrow>
+      <mn>4</mn>
+    </mrow>
+  </mfrac>
+  <msup>
+    <mi>d</mi><mn>2</mn>
+  </msup>
 </math>, as well as displayed math via the
 <cite>math</cite> directive:</p>
 <div>
@@ -132,9 +128,7 @@ See <a class="reference internal" href="#eq-m">eq:M</a> and <a class="reference
 </math>
 </div>
 <p>is <math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mo stretchy="false">|</mo><mi mathvariant="bold">M</mi><mo stretchy="false">|</mo><mo>=</mo><mi>a</mi><mi>d</mi><mo>-</mo><mi>b</mi><mi>c</mi>
-  </mrow>
+  <mo stretchy="false">|</mo><mi mathvariant="bold">M</mi><mo stretchy="false">|</mo><mo>=</mo><mi>a</mi><mi>d</mi><mo>−</mo><mi>b</mi><mi>c</mi>
 </math>.</p>
 <p>More than one display math block can be put in one math directive.
 For example, the following sum and integral with limits:</p>
@@ -220,9 +214,7 @@ directives:</p>
 </math>
 </div>
 <p>with the <em>wave function</em> <math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mi class="capital-greek">Ψ</mi>
-  </mrow>
+  <mi class="capital-greek">Ψ</mi>
 </math>, describes how the quantum state of a
 physical system changes in time.</p>
 <dl>
@@ -235,127 +227,103 @@ physical system changes in time.</p>
 </colgroup>
 <tbody>
 <tr><td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>a</mi>
-      </mrow>
-      <mo>´</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>a</mi>
+    </mrow>
+    <mo>´</mo>
+  </mover>
 </math>      <span class="docutils literal">\acute{a}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>t</mi>
-      </mrow>
-      <mo>˙</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>t</mi>
+    </mrow>
+    <mo>·</mo>
+  </mover>
 </math>        <span class="docutils literal">\dot{t}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>γ</mi>
-      </mrow>
-      <mo>^</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>γ</mi>
+    </mrow>
+    <mo>^</mo>
+  </mover>
 </math>   <span class="docutils literal"><span class="pre">\hat{\gamma}</span></span></p></td>
 </tr>
 <tr><td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>a</mi>
-      </mrow>
-      <mo>`</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>a</mi>
+    </mrow>
+    <mo>`</mo>
+  </mover>
 </math>      <span class="docutils literal">\grave{a}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>t</mi>
-      </mrow>
-      <mo>¨</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>t</mi>
+    </mrow>
+    <mo>··</mo>
+  </mover>
 </math>       <span class="docutils literal">\ddot{t}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>α</mi>
-      </mrow>
-      <mo>˜</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>α</mi>
+    </mrow>
+    <mo>∼</mo>
+  </mover>
 </math> <span class="docutils literal"><span class="pre">\tilde{\alpha}</span></span></p></td>
 </tr>
 <tr><td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>x</mi>
-      </mrow>
-      <mo>˘</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>x</mi>
+    </mrow>
+    <mo>˘</mo>
+  </mover>
 </math>      <span class="docutils literal">\breve{x}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>t</mi>
-      </mrow>
-      <mo>⃛</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>t</mi>
+    </mrow>
+    <mo>···</mo>
+  </mover>
 </math>      <span class="docutils literal">\dddot{t}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>ı</mi>
-      </mrow>
-      <mo>⃗</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>ı</mi>
+    </mrow>
+    <mo>⃗</mo>
+  </mover>
 </math>   <span class="docutils literal"><span class="pre">\vec{\imath}</span></span></p></td>
 </tr>
 <tr><td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>a</mi>
-      </mrow>
-      <mo>ˇ</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>a</mi>
+    </mrow>
+    <mo>ˇ</mo>
+  </mover>
 </math>      <span class="docutils literal">\check{a}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>a</mi>
-      </mrow>
-      <mo>¯</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>a</mi>
+    </mrow>
+    <mo>-</mo>
+  </mover>
 </math>        <span class="docutils literal">\bar{a}</span></p></td>
 <td><p><math xmlns="http://www.w3.org/1998/Math/MathML">
-  <mrow>
-    <mover>
-      <mrow>
-        <mi>R</mi>
-      </mrow>
-      <mo>⃗</mo>
-    </mover>
-  </mrow>
+  <mover>
+    <mrow>
+      <mi>R</mi>
+    </mrow>
+    <mo>⃗</mo>
+  </mover>
 </math>        <span class="docutils literal">\vec{R}</span></p></td>
 </tr>
 </tbody>
@@ -403,7 +371,7 @@ physical system changes in time.</p>
               <munderover>
                 <mo>∫</mo>
                 <mrow>
-                  <mo>-</mo><mo>∞</mo>
+                  <mo>−</mo><mo>∞</mo>
                 </mrow>
                 <mrow>
                   <mo>∞</mo>
@@ -432,7 +400,7 @@ physical system changes in time.</p>
               <munderover>
                 <mo>∫</mo>
                 <mrow>
-                  <mo>-</mo><mo>∞</mo>
+                  <mo>−</mo><mo>∞</mo>
                 </mrow>
                 <mrow>
                   <mo>∞</mo>
@@ -480,7 +448,7 @@ physical system changes in time.</p>
         <msub>
           <mi>s</mi><mi>δ</mi>
         </msub>
-        <mo stretchy="false">(</mo><mi>x</mi><mo>-</mo><mi>x</mi><mo>'</mo><mo stretchy="false">)</mo>
+        <mo stretchy="false">(</mo><mi>x</mi><mo>−</mo><mi>x</mi><mo>'</mo><mo stretchy="false">)</mo>
       </mtd>
     </mtr>
     <mtr>
@@ -498,7 +466,7 @@ physical system changes in time.</p>
         <msub>
           <mi>s</mi><mi>δ</mi>
         </msub>
-        <mo stretchy="false">(</mo><mi>x</mi><mo>-</mo><mi>x</mi><mo>'</mo><mo stretchy="false">)</mo><mi mathvariant="normal">d</mi><mi>x</mi><mo>'</mo>
+        <mo stretchy="false">(</mo><mi>x</mi><mo>−</mo><mi>x</mi><mo>'</mo><mo stretchy="false">)</mo><mi mathvariant="normal">d</mi><mi>x</mi><mo>'</mo>
       </mtd>
     </mtr>
   </mtable>
@@ -516,7 +484,7 @@ physical system changes in time.</p>
           <mtable>
             <mtr>
               <mtd>
-                <mo>-</mo><mn>1</mn>
+                <mo>−</mo><mn>1</mn>
               </mtd>
               <mtd>
                 <mi>x</mi><mo>&lt;</mo><mn>0</mn>