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This template  uses Lua :
 
This template trims leading and trailing square brackets and whitespace from a string. This is similar to {{ delink }} , but it won't remove brackets from the middle of the string. The string should be passed as the first unnamed parameter or using |1= if your string contains any = signs. You may substitute  this template - that is, if used as {{subst:trim brackets }}, the resulting wikicode is "clean".
Usage 
{{trim brackets |text }} = text  with any leading or trailing square brackets removed (as long as text  doesn't contain any = signs).
{{trim brackets |1=text }} = text  with any leading or trailing square brackets removed.
Example 
"{{trim brackets |1= [[abc]], [[def]], and [[ghi]] }}" produces "abc]], def , and [[ghi"{{delink |1= [[abc]], [[def]], and [[ghi]] }}" produces "abc, def, and ghi"). 
Template data 
Template parameters[ Edit template data ] 
Parameter Description Type Status String 1The string to be trimmed
String required 
See also 
{{ delink }} , which does nearly the exact same thing, but also removes balanced pairs of square brackets that aren't leading and trailing and has additional options.{{ trim }} {{ Escape page link from within }} {{ Linked }}  – links if not already linked
String-handling templates 
(help page) 
Substring (select chunk of string by its position)
  {{ str sub new }}   Select a substring based on starting and ending index counted in either direction.  {{ str left }}   Keep the first N characters of a string, or duplicate it to N characters.  {{ str crop }}   Return all but the last N characters of a string.  {{ str index }}   Return the N-th character of a string. 
   {{ str right }}   Return substring starting at N-th character to end of string.  {{ str rightc }}   Return the last N characters of a string; or a given value if empty.  {{ str sub old }}   Return substring of given length starting at N-th character. 
 
Trimming (select/remove chunk of string by character type)
Select/remove specific item from string
  {{ delink }} , {{ trim brackets }}   Removes wikilink brackets (wikicode); all  or outer only .  {{ Plain text }}   Removes wikicode (formatting and brackets)  {{ PAGENAMEBASE }}   Trim off any parenthesis text at the end of a string (disambiguation).  {{ title disambig text }}   Returns text in parentheses at the end of a string (disambiguation). 
   {{ title year }}   Returns the 3-or-4-digit year from a pagename, if any.  {{ title decade }}   Returns the 4-digit decade from a pagename (e.g. "1740" from "Foo 1740s bar"), if any.  {{ title number }}   Returns any number from a pagename.  {{ WikiProjectbasename }}   Removes "WikiProject" from a pagename. 
 
Insertion, replacement, and length
  
     {{ loop }}   Repeat character string a specified number of times.  {{ replace }}   Returns the string, after replacing all  occurrences of a specified string with another string.  {{ str rep }}   Returns the string, after replacing the first occurrence of a specified string with another string.  {{ digits }}   Returns the string, after removing all characters that are not digits 0–9  {{ Nowiki }}   Displays wikitext as plain text. 
   
     {{ str len }}   Returns a string's length.  {{ str ≥ len }}   Check if a string is "longer or equally long" or "shorter" than a given length.  {{ str ≤ len }}   Check if a string is "shorter or equally long" or "longer" than a given length.  {{ str ≠ len }}   Check if a string is "not equal" or "equal" to a given length. 
 
Analysis and searching
  
       
     {{ Array }}   Array item manipulation and retrieval.  {{ a or an }}   Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel.  {{ in string }}   Returns optional string when given string is not found  {{ Isnumeric }}   Returns number when true, blank when not numeric.  {{ str letter }}   Returns the number of letters that begin a string.  {{ str number }}   Returns the number of numbers that begin a string. 
 
Modules and built-in functions