fix: NOT optionlink: 'x

Author: justinmk

corpus/optionlink.txt

@@ -29,12 +29,12 @@ world 'hello' world
       (word))))
 
 ================================================================================
-NOT optionlink: ' followed by whitespace
+NOT optionlink: ' or 'x
 ================================================================================
 'fillchars'
-	  stl		' ' or '^'	statusline
-	  wbr		' '		windowbar
-          tricky:	' 'yes'
+stl		' ' or '^'	statusline
+wbr		' '		windowbar
+tricky:	' 'yes'  's foo
 
 
 --------------------------------------------------------------------------------
@@ -60,12 +60,14 @@ NOT optionlink: ' followed by whitespace
       (word)
       (word)
       (optionlink
-        (word)))))
+        (word))
+      (word)
+      (word))))
 
 ================================================================================
 NOT optionlink #7 #14
 ================================================================================
-Let's see if that works.
+Let's see.
 no! ','sqlKeyword'
 single-char '-' 'g' '보'
 non-ascii: '\"' '%)' '-bang' '.*\\.log' '.gitignore' '@{${\"foo\"}}'
@@ -80,9 +82,6 @@ number: '04' 'ISO-10646-1' 'python3'
 (help_file
   (block
     (line
-      (word)
-      (word)
-      (word)
       (word)
       (word))
     (line
@@ -155,8 +154,7 @@ x `after_codespan`'s
       (word)
       (codespan
         (word))
-      (word)
-      (ERROR))))
+      (word))))
 
 ================================================================================
 NOT optionlink 3

grammar.js

@@ -61,8 +61,10 @@ module.exports = grammar({
 
     // Explicit special cases: these are plaintext, not errors.
     _word_common: () => choice(
-      // NOT optionlink: single "'".
+      // NOT optionlink: '
       "'",
+      // NOT optionlink: 'x
+      seq("'", token.immediate(/[^'\n\t ]/)),
       // NOT optionlink: followed by non-lowercase char.
       seq("'", token.immediate(/[a-z]*[^'a-z\n\t ][a-z]*/), optional(token.immediate("'"))),
       // NOT optionlink: single char surrounded by "'".