diff --git a/.gitignore b/.gitignore
index e92e2846..bbebfa4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,12 @@
+# This is created by bin/test/languages.bash. But should not be committed.
+languages/
+
 # PLCC places generated Java files in directories named Java. Ignore them.
 Java/
 
+# PLCC places generated Python files in directories named Python. Ignore them.
+Python/
+
 # Created by Docker environment
 .bash_history
 
diff --git a/bin/test/languages.bash b/bin/test/languages.bash
new file mode 100644
index 00000000..31d442eb
--- /dev/null
+++ b/bin/test/languages.bash
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+LANGUAGES_VERSION="${LANGUAGES_VERSION:-}"
+cd /tmp
+
+rm -rf languages
+git clone https://github.com/ourPLCC/languages.git
+if [ -n "${LANGUAGES_VERSION}" ] ; then
+    git -C ./languages checkout "${LANGUAGES_VERSION}"
+fi
+languages/bin/test.bash
+rm -rf languages
diff --git a/docs/Developer.md b/docs/Developer.md
index 121ba556..e2756cbb 100644
--- a/docs/Developer.md
+++ b/docs/Developer.md
@@ -211,6 +211,20 @@ bin/test/everything.bash
 bin/test/functionality.bash
 ```
 
+### Test languages
+
+Check if our changes work with ourPLCC/languages:
+
+```bash
+bin/test/languages.bash
+```
+
+Test a specific version (git tag, branch, or commit hash) of ourPLCC/languages:
+
+```bash
+LANGUAGES_VESRION=v1.0.1 bin/test/languages.bash
+```
+
 ### Test other things
 
 To learn what other class of tests you can run...
diff --git a/src/plcc.py b/src/plcc.py
index 6175555f..a2f5bc72 100644
--- a/src/plcc.py
+++ b/src/plcc.py
@@ -719,7 +719,7 @@ def python_makeAbstractStub(base):
 #{base}:top#
 #{base}:import#
 
-class {base}({ext}): #{base}:class# 
+class {base}({ext}): #{base}:class#
 
     className = "{base}"
 
@@ -843,7 +843,7 @@ def python_makeStub(cls):
 #{cls}:import#
 
 # {ruleString}
-class {cls}({ext}): #{cls}:class# 
+class {cls}({ext}): #{cls}:class#
 
     className = "{cls}"
     ruleString = "{ruleString}"
@@ -1101,7 +1101,7 @@ def sem(nxt):
                 deathLNO('no stub for class {} -- cannot replace //{}:{}//'.format(cls, cls, mod))
             stubs[cls] = codeString
     semFinishUp()
-    
+
 
 def getCode(nxt):
     code = []
@@ -1130,10 +1130,11 @@ def getCode(nxt):
     else:
         deathLNO('premature end of file')
     lineMode = False # switch off line mode
-    while len(code[0]) == 0:
-        code.pop(0)
-    while len(code[-1]) == 0:
-        code.pop()
+    if len(code)>0 :
+        while len(code[0]) == 0:
+            code.pop(0)
+        while len(code[-1]) == 0:
+            code.pop()
     return code
 
 def semFinishUp():