commit 190d945b929898ef1f58a23d71ff88ca289efcb9
author Dominique Unruh <unruh@ut.ee> Thu Jun 30 11:45:26 2016 +0300
committer Dominique Unruh <unruh@ut.ee> Thu Jun 30 11:45:26 2016 +0300
tree 175cc658a1f036f826bff30c6d4bac2403c9419c
parent 442079571c8574495eb9a636bc7af3b20a8c034f

Support for brackets \langle,\rangle (didn't parse before), \lVert,\rVert (new).

src/commands/math/commands.js

diff --git a/src/commands/math/commands.js b/src/commands/math/commands.js
index 37c00bf..6153881 100644
--- a/src/commands/math/commands.js
+++ b/src/commands/math/commands.js
@@ -658,7 +658,9 @@
   '⟩': '⟨',
   '\\langle ': '\\rangle ',
   '\\rangle ': '\\langle ',
-  '|': '|'
+  '|': '|',
+  '\\lVert' : '\\rVert',
+  '\\rVert' : '\\lVert',
 };
 
 function bindCharBracketPair(open, ctrlSeq) {
@@ -672,6 +674,8 @@
 LatexCmds.langle = bind(Bracket, L, '⟨', '⟩', '\\langle ', '\\rangle ');
 LatexCmds.rangle = bind(Bracket, R, '⟨', '⟩', '\\langle ', '\\rangle ');
 CharCmds['|'] = bind(Bracket, L, '|', '|', '|', '|');
+LatexCmds.lVert = bind(Bracket, L, '∥', '∥', '\\lVert ', '\\rVert ');
+LatexCmds.rVert = bind(Bracket, R, '∥', '∥', '\\lVert ', '\\rVert ');
 
 LatexCmds.left = P(MathCommand, function(_) {
   _.parser = function() {
@@ -680,13 +684,17 @@
     var succeed = Parser.succeed;
     var optWhitespace = Parser.optWhitespace;
 
-    return optWhitespace.then(regex(/^(?:[([|]|\\\{)/))
-      .then(function(ctrlSeq) { // TODO: \langle, \rangle
+    return optWhitespace.then(regex(/^(?:[([|]|\\\{|\\langle|\\lVert)/))
+      .then(function(ctrlSeq) {
         var open = (ctrlSeq.charAt(0) === '\\' ? ctrlSeq.slice(1) : ctrlSeq);
+	if (ctrlSeq=="\\langle") open = '⟨';
+	if (ctrlSeq=="\\lVert") open = '∥';
         return latexMathParser.then(function (block) {
           return string('\\right').skip(optWhitespace)
-            .then(regex(/^(?:[\])|]|\\\})/)).map(function(end) {
+            .then(regex(/^(?:[\])|]|\\\}|\\rangle|\\rVert)/)).map(function(end) {
               var close = (end.charAt(0) === '\\' ? end.slice(1) : end);
+	      if (end=="\\rangle") close = '⟩';
+	      if (end=="\\rVert") close = '∥';
               var cmd = Bracket(0, open, close, ctrlSeq, end);
               cmd.blocks = [ block ];
               block.adopt(cmd, 0, 0);

test/unit/latex.test.js

diff --git a/test/unit/latex.test.js b/test/unit/latex.test.js
index 7cfa094..bd60403 100644
--- a/test/unit/latex.test.js
+++ b/test/unit/latex.test.js
@@ -85,6 +85,24 @@
     assert.equal(tree.join('latex'), '\\left(123\\right)');
   });
 
+  test('langle/rangle (issue #508)', function() {
+    var tree = latexMathParser.parse('\\left\\langle 123\\right\\rangle)');
+
+    assert.ok(tree.ends[L] instanceof Bracket);
+    var contents = tree.ends[L].ends[L].join('latex');
+    assert.equal(contents, '123');
+    assert.equal(tree.join('latex'), '\\left\\langle123\\right\\rangle)');
+  });
+
+  test('lVert/rVert', function() {
+    var tree = latexMathParser.parse('\\left\\lVert 123\\right\\rVert)');
+
+    assert.ok(tree.ends[L] instanceof Bracket);
+    var contents = tree.ends[L].ends[L].join('latex');
+    assert.equal(contents, '123');
+    assert.equal(tree.join('latex'), '\\left\\lVert123\\right\\rVert)');
+  });
+
   test('parens with whitespace', function() {
     assertParsesLatex('\\left ( 123 \\right ) ', '\\left(123\\right)');
   });