non-intrusively disable search plugin for non-html output

revert lint fixes to plugins/search/plugin.py

Fix spurious exception when another error has occurred.

sphinx_immaterial/plugins/search/plugin.py

@@ -143,8 +143,6 @@ def on_serve(self, server, *, config, builder):
     # Translate the given placeholder value
     def _translate(self, config, value):
         env = config.theme.get_env()
-        if env is None:  # not using a HTML builder
-            return value
 
         # Load language template and return translation for placeholder
         language = "partials/language.html"
@@ -408,7 +406,7 @@ def handle_starttag(self, tag, attrs):
 
         # Ignore self-closing tags
         el = Element(tag, attrs)
-        if tag not in void:
+        if not tag in void:
             self.context.append(el)
         else:
             return
@@ -511,7 +509,7 @@ def handle_data(self, data):
             return
 
         # Collapse whitespace in non-pre contexts
-        if "pre" not in self.context:
+        if not "pre" in self.context:
             if not data.isspace():
                 data = data.replace("\n", " ")
             else:

sphinx_immaterial/search.py

@@ -2,7 +2,6 @@
 
 import multiprocessing
 import pathlib
-from typing import Optional
 
 import docutils.nodes
 import jinja2.sandbox
@@ -47,15 +46,9 @@ class _Theme:
     def __init__(self, app: sphinx.application.Sphinx):
         self._app = app
         builder = self._app.builder
-        self._jinja2_env: Optional[jinja2.sandbox.SandboxedEnvironment]
-        if isinstance(builder, sphinx.builders.html.StandaloneHTMLBuilder):
-            # only useful if using HTML output
-            self._jinja2_env = jinja2.sandbox.SandboxedEnvironment(
-                loader=builder.templates
-            )
-            self._jinja2_env.globals.update(builder.globalcontext)
-        else:
-            self._jinja2_env = None
+        assert isinstance(builder, sphinx.builders.html.StandaloneHTMLBuilder)
+        self._jinja2_env = jinja2.sandbox.SandboxedEnvironment(loader=builder.templates)
+        self._jinja2_env.globals.update(builder.globalcontext)
 
     def get_env(self):
         return self._jinja2_env
@@ -91,7 +84,15 @@ def _html_page_context(
     queue.append(indexer.entries)
 
 
-def _build_finished(app: sphinx.application.Sphinx, exception) -> None:
+def _build_finished(app: sphinx.application.Sphinx, exc) -> None:
+    if exc:
+        # Skip generating search index if an error occurred.
+        return
+
+    # Only applies to HTML builder.
+    if not isinstance(app.builder, sphinx.builders.html.StandaloneHTMLBuilder):
+        return
+
     queue = getattr(app, _SEARCH_QUEUE_KEY)
     indexer = _make_indexer(app)
     for entries in queue[:]: