feat: \dddot and \ddddot support

Fixes #2744 (though italic correction is off)
KaTeX · Jun 19, 2023 · 1bbb25a · 1bbb25a
1 parent 5dd9bc4
commit 1bbb25a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/macros.js b/src/macros.js
@@ -380,6 +380,12 @@ defineMacro("\\iff", "\\DOTSB\\;\\Longleftrightarrow\\;");
 defineMacro("\\implies", "\\DOTSB\\;\\Longrightarrow\\;");
 defineMacro("\\impliedby", "\\DOTSB\\;\\Longleftarrow\\;");
 
+// \def\dddot#1{{\mathop{#1}\limits^{\vbox to-1.4\ex@{\kern-\tw@\ex@
+//  \hbox{\normalfont ...}\vss}}}}
+// We use \overset which avoids the vertical shift of \mathop.
+defineMacro("\\dddot", "{\\overset{\\raisebox{-0.1ex}{\\normalsize ...}}{#1}}");
+defineMacro("\\ddddot", "{\\overset{\\raisebox{-0.1ex}{\\normalsize ....}}{#1}}");
+
 // AMSMath's automatic \dots, based on \mdots@@ macro.
 const dotsByToken = {
     ',': '\\dotsc',