Allow spaces in column titles

Author: runestonetest

runestone/spreadsheet/js/spreadsheet.js

@@ -39,7 +39,7 @@ class SpreadSheet extends RunestoneBase {
         if (this.coltitles) {
             for (let i in this.coltitles) {
                 if (opts.columns[i]) {
-                    opts.columns[i].title = this.coltitles[i];
+                    opts.columns[i].title = unescape(this.coltitles[i]);
                 } else {
                     opts.columns.push({title:this.coltitles[i]});
                 }

runestone/spreadsheet/spreadsheet.py

@@ -19,6 +19,7 @@
 import io
 import os
 import re
+import urllib.parse
 from docutils import nodes
 from docutils.parsers.rst import directives
 from runestone.common.runestonedirective import (
@@ -124,7 +125,7 @@ def run(self):
             self.options["coltitles"] = ""
         else:
             self.options["coltitles"] = "data-coltitles=[{}]".format(
-                ",".join([x.strip() for x in self.options["coltitles"].split(",")])
+                ",".join([urllib.parse.quote(x.strip(),safe="'\"") for x in self.options["coltitles"].split(",")])
             )
 
         if "mindimensions" not in self.options:

runestone/spreadsheet/test/_sources/index.rst

@@ -40,6 +40,7 @@ Cells in the spreadsheet that are graded are initially colored light blue.  When
 
 .. spreadsheet:: ss3
    :colwidths: 200,200
+   :coltitles: 'my formula', 'result'
 
    "=CONCATENATE(""abc"", ""xyz"")","=CONCATENATE(""abc"", ""xyz"")"
    '=1+1, 2