Prevent automatic conversion of -- operator to en dash in index

skotniczny · marijnh · commit 7bbcc977e923 · 2018-02-17T14:41:00.000+01:00
diff --git a/src/render_latex.js b/src/render_latex.js
@@ -44,12 +44,15 @@ function escapeIndexChar(ch) {
     case "|": return "\\textbar{} "
     case "@": return "\"@"
     case "!": return "\"!"
+    case "- ": return "-@− "
+    case "--": return "--@−−"
+    case "-=": return "-=@−="
     default: return "\\" + ch
   }
 }
 function escapeIndex(value) {
   if (Array.isArray(value)) return value.map(escapeIndex).join("!")
-  return String(value).replace(/[&%$#_{}~^\\|!@]/g, escapeIndexChar)
+  return String(value).replace(/[&%$#_{}~^\\|!@]|-[ -=]/g, escapeIndexChar)
 }
 
 function escapeComplexScripts(string) {

Original file line number	Diff line number	Diff line change
`@@ -44,12 +44,15 @@ function escapeIndexChar(ch) {`
`44`	`44`	`case "\|": return "\\textbar{} "`
`45`	`45`	`case "@": return "\"@"`
`46`	`46`	`case "!": return "\"!"`
	`47`	`+ case "- ": return "-@− "`
	`48`	`+ case "--": return "--@−−"`
	`49`	`+ case "-=": return "-=@−="`
`47`	`50`	`default: return "\\" + ch`
`48`	`51`	`}`
`49`	`52`	`}`
`50`	`53`	`function escapeIndex(value) {`
`51`	`54`	`if (Array.isArray(value)) return value.map(escapeIndex).join("!")`
`52`		`- return String(value).replace(/[&%$#_{}~^\\\|!@]/g, escapeIndexChar)`
	`55`	`+ return String(value).replace(/[&%$#_{}~^\\\|!@]\|-[ -=]/g, escapeIndexChar)`
`53`	`56`	`}`
`54`	`57`
`55`	`58`	`function escapeComplexScripts(string) {`