Add more colors to fstab syntax

assets/syntaxes/Fstab.sublime-syntax

@@ -8,18 +8,126 @@ scope: source.fstab
 
 contexts:
   main:
-    - match: '^\s*\#.*'
-      scope: comment.line.number-sign
-      comment: just a comment line
-    - match: ^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(0|1)\s+(0|1|2)\s*$
+    - include: comment
+    - match: '^'
+      push: fstab_device
+      comment: leading spaces
+
+  fstab_device:
+    - include: comment
+    - match: '\s*([^=\s]+=)([^\s]+)\s*'
+      comment: device by uuid or label
+      set: fstab_mountpoint
       captures:
-        1: entity.name.device.fstab
-        2: entity.name.mountpoint.fstab
-        3: entity.name.type.fstab
-        4: entity.name.options.fstab
-        5: constant.numeric.dump.fstab
-        6: constant.numeric.pass.fstab
-      comment: a valid fstab line with 6 space-separated token groups
-    - match: '^.*$'
-      scope: invalid.illegal.fstab
-      comment: everything else, probably an error
+        1: punctuation.accessor
+        2: keyword.other.device
+    - match: '\s*(//|\\\\)([^\s]+)\s*'
+      comment: device by samba share
+      set: fstab_mountpoint
+      captures:
+        1: punctuation.accessor
+        2: keyword.other.device
+    - match: '\s*([^\s]+)(:)([^\s]+)\s*'
+      comment: device by server
+      set: fstab_mountpoint
+      captures:
+        1: keyword.other.device
+        2: punctuation.accessor
+        3: keyword.other.device
+    - match: '\s*[^\s/\\]+\s*'
+      comment: device by dev name
+      set: fstab_mountpoint
+      scope: keyword.other.device
+    - match: '\s*(/dev/)([^\s]+)\s*'
+      comment: device by dev path
+      set: fstab_mountpoint
+      captures: 
+        1: punctuation.accessor
+        2: keyword.other.device
+    - match: '\s*([^\s/]*/)*([^\s]+)\s*'
+      comment: device by unknown path
+      set: fstab_mountpoint
+      captures:
+        1: punctuation.accessor
+        2: keyword.other.device
+    - include: clear
+
+  fstab_mountpoint:
+    - include: comment
+    - match: '\s*/[^\s]*\s*'
+      comment: mount point
+      set: fstab_filesystem
+      scope: string.unquoted.mountpoint
+    - match: '\s*[^\s]+\s*'
+      comment: mount point without leading slash (invalid)
+      set: fstab_filesystem
+      scope: invalid.illegal
+    - include: clear
+
+  fstab_filesystem:
+    - include: comment
+    - match: '\s*[^\s]+\s*'
+      comment: filesystem type
+      set: fstab_options
+      scope: variable.parameter.filesystem
+    - include: clear
+
+  fstab_options:
+    - include: comment
+    - match: '([^\s,=]+)(=)([^\s,]+)'
+      comment: key-value option
+      captures:
+       1: entity.name.option
+       2: entity.other.separator
+       3: variable.parameter
+    - match: '[^\s,]+'
+      comment: flag option
+      scope: entity.name.option
+    - match: ','
+      comment: option separator
+      scope: punctuation.separator
+    - match: '\s+'
+      comment: next field
+      set: fstab_dump
+    - include: clear
+
+  fstab_dump:
+    - include: comment
+    - match: '\s*[01]\s*'
+      comment: dump field
+      scope: constant.numeric
+      set: fstab_pass
+    - match: '\s*[^\s]+\s*'
+      comment: invalid dump field
+      scope: invalid.illegal
+      set: fstab_pass
+    - include: clear
+
+  fstab_pass:
+    - include: comment
+    - match: '\s*[01]\s*'
+      comment: pass field
+      scope: constant.numeric
+      set: expected_eol
+    - match: '\s*[^\s]+\s*'
+      comment: invalid pass field
+      scope: invalid.illegal
+      set: expected_eol
+    - include: clear
+
+  expected_eol:
+    - include: comment
+    - include: clear
+    - match: '.*'
+      scope: invalid.illegal
+
+  comment:
+    - match: '\s*#.*$'
+      comment: comment using the number sign
+      scope: comment.line
+
+  clear:
+    - match: '.*$'
+      comment: used for clearing the context
+      pop: true
+