Fix lists with mixed indentation

Closes GH-198.
Closes GH-485.

Author: scinos

packages/remark-parse/lib/util/get-indentation.js

@@ -15,6 +15,7 @@ function indentation(value) {
   var character = value.charAt(index)
   var stops = {}
   var size
+  var lastIndent = 0
 
   while (character === tab || character === space) {
     size = character === tab ? tabSize : spaceSize
@@ -25,7 +26,10 @@ function indentation(value) {
       indent = Math.floor(indent / size) * size
     }
 
-    stops[indent] = index
+    while (lastIndent < indent) {
+      stops[++lastIndent] = index
+    }
+
     character = value.charAt(++index)
   }
 

packages/remark-parse/lib/util/remove-indentation.js

@@ -6,7 +6,6 @@ var getIndent = require('./get-indentation')
 
 module.exports = indentation
 
-var tab = '\t'
 var lineFeed = '\n'
 var space = ' '
 var exclamationMark = '!'
@@ -21,7 +20,6 @@ function indentation(value, maximum) {
   var index
   var indentation
   var stops
-  var padding
 
   values.unshift(repeat(space, maximum) + exclamationMark)
 
@@ -56,18 +54,7 @@ function indentation(value, maximum) {
         index--
       }
 
-      if (
-        trim(values[position]).length !== 0 &&
-        minIndent &&
-        index !== minIndent
-      ) {
-        padding = tab
-      } else {
-        padding = ''
-      }
-
-      values[position] =
-        padding + values[position].slice(index in stops ? stops[index] + 1 : 0)
+      values[position] = values[position].slice(stops[index] + 1)
     }
   }
 

test/fixtures/input/list-mixed-indentation.text

@@ -0,0 +1,34 @@
+# Mixed spaces and tabs
+
+- (item 1.) Minimum list, equivalent to two spaces
+ - (item 2.) indented with 1 space, not enough indentation to be a subitem
+	- (item 2.1.) indented with tab
+
+
+- (item 1.) Minimum list, equivalent to two spaces
+  - (item 1.1.) indentend with 2 spaces
+	- (item 1.2.) indented with tab
+
+
+-  (item 1.) List with 1 extra space
+   - (item 1.1.) indentend with 3 spaces
+	- (item 1.2.) indented with tab
+
+
+-   (item 1.) List with 2 extra space, equivalent to 1 tab indentation
+    - (item 1.1.) indentend with 4 spaces
+	- (item 1.2.) indented with tab
+
+
+-	(item 1.) List with 1 tab, equivalent to 4 spaces
+    - (item 1.1.) indentend with 4 spaces
+	- (item 1.2.) indented with tab
+
+
+-	(item 1.) list with double indentation and mixed items
+	- (item 1.1.) normal indentation with 1 tab
+        - (item 1.1.1.) item with 4 spaces + 4 spaces
+	    - (item 1.1.2.) item with tab + 4 spaces
+    	- (item 1.1.3.) item with 4 spaces + tab
+		- (item 1.1.4.) item with tab + tab
+  	  - (item 1.1.5.) item with 2 spaces + tab + 2 spaces (nasty!)