directly inserting skipText into js

doc/conf.py

@@ -82,6 +82,8 @@
 #
 # html_theme_options = {}
 
+copybutton_skip_text = ">>>"
+
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".

sphinx_copybutton/__init__.py

@@ -7,19 +7,20 @@ def scb_static_path(app):
     static_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '_static'))
     app.config.html_static_path.append(static_path)
 
-def add_skip_text_js(app):
-    skip_text = app.config['copybutton_skip_text']
-    app.add_js_file(None, body="var copybuttonSkipText = '{}';".format(skip_text))
+def add_to_context(app, pagename, templatename, context, doctree):
+    context['copybutton_skip_text'] = app.config['copybutton_skip_text']
 
 def setup(app):
     print('Adding copy buttons to code blocks...')
     # Add our static path
     app.connect('builder-inited', scb_static_path)
-    app.connect('builder-inited', add_skip_text_js)
 
     # configuration for this tool
     app.add_config_value("copybutton_skip_text", ">>> ", "html")
 
+    # Add configuration value to the template
+    app.connect("html-page-context", add_to_context)
+
     # Add relevant code to headers
     app.add_css_file('copybutton.css')
     app.add_js_file('clipboard.min.js')

sphinx_copybutton/_static/copybutton.js → sphinx_copybutton/_static/copybutton.js_t

@@ -65,17 +65,7 @@ const temporarilyChangeTooltip = (el, newText) => {
 var copyTargetText = (trigger) => {
   var target = document.querySelector(trigger.attributes['data-clipboard-target'].value);
   var textContent = target.textContent.split('\n');
-  // Prevent breaking of the copy functionality, for themes which don't
-  // set copybuttonSkipText properly.
-  if(! ("copybuttonSkipText" in window)){
-    var copybuttonSkipText = ">>> ";
-    console.warn(`sphinx_copybutton:
-    The theme that was used to generate this document, does not support the setting for 'copybutton_skip_text',
-    which is why its default of '>>> ' was used.
-    Please tell the theme developers to include javascript files with the template tag 'js_tag' for sphinx>=1.8.
-    Example: https://github.com/readthedocs/sphinx_rtd_theme/blob/ab7d388448258a24f8f4fa96dccb69d24f571736/sphinx_rtd_theme/layout.html#L30
-    `);
-  }
+  var copybuttonSkipText = '{{ copybutton_skip_text }}' // Inserted from config
 
   textContent.forEach((line, index) => {
     if (line.startsWith(copybuttonSkipText)) {