used code from PR: mklabs#49 by sorleone

lib/installer.js

@@ -45,6 +45,16 @@ const scriptFromShell = (shell = systemShell()) => {
   return path.join(__dirname, 'scripts/bash.sh');
 };
 
+/**
+ * Helper to escape regular expression chars
+ *
+ * @param {String} str - String to escape the chars from
+ * @returns The escaped text
+ */
+const escapeRegExp = (str) => {
+  return str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
+}
+
 /**
  * Helper to return the expected location for SHELL config file, based on the
  * provided shell value.
@@ -122,7 +132,7 @@ const checkFilenameForLine = async (filename, line) => {
     }
   }
 
-  return !!filecontent.match(`${line}`);
+  return !!filecontent.match(escapeRegExp(`${line}`));
 };
 
 /**
@@ -329,7 +339,7 @@ const removeLinesFromFilename = async (filename, name) => {
     ? `# tabtab source for packages`
     : `# tabtab source for ${name} package`;
 
-  const hasLine = !!filecontent.match(`${sourceLine}`);
+  const hasLine = !!filecontent.match(escapeRegExp(`${sourceLine}`));
   if (!hasLine) {
     return debug('File %s does not include the line: %s', filename, sourceLine);
   }
@@ -338,7 +348,7 @@ const removeLinesFromFilename = async (filename, name) => {
   const buffer = lines
     // Build up the new buffer, removing the 3 lines following the sourceline
     .map((line, index) => {
-      const match = line.match(sourceLine);
+      const match = line.match(escapeRegExp(sourceLine));
       if (match) {
         lineIndex = index;
       } else if (lineIndex + 3 <= index) {