Template:String-handling templates

String-handling templates (help page)

Trimming

By counting

{#invoke:string|sub}, {str sub new}: Select a substring based on starting and ending index counted in either direction.

{trunc}	To trim down to a specified number of characters.
{str left}	To trim down to a specified number of characters or duplicate the string to a specified number.
{str crop}	To crop a specified number of characters off the end.
{str index}	Returns a given character from a string, but not accented letters.

{str right}	To trim the first specified number of characters.
{str rightc}	To return a number of characters from the end, returns a parameter if the string is empty.
{str rightmost}	To trim down to the last specified number of characters.
{str sub old}	To trim down to a specified number, starting at a given number from the left.

By checking

{trim}	To trim any leading or trailing whitespace
{str letter/trim}	To trim down to the beginning letters.
{str number/trim}	To trim down to the beginning numbers.
{trim brackets}	To trim any leading or trailing square brackets.
{trim quotes}	To trim leading or trailing matching quotes.
{trim leading}	To trim up to six instances of specified <prefix>.

{string split}	Extract a short string from a long string.
{first word}	To trim down to the first space.
{remove first word}	To remove anything before the first space.
{last word}	To trim down from the last space.
{remove last word}	To remove anything after the last space.

Dedicated

{delink}, {trim brackets}	Removes wikilink brackets (wikicode); all or outer only.
{remove file prefix}	Removes "File:" (or "Image:") from filenames.
{PAGENAMEBASE}	To 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).

{WikiProjectbasename}	Removes "WikiProject" from a pagename.
{ship prefix}	Returns the length of a ship's name prefix, if listed (ship names).
{title year}	Returns the 4-digit year from a pagename, if any.
{title decade}	Returns the 4-digit decade (e.g. "1740s") from a pagename, if any.

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
{Plain text}, {Nowiki}	Strips wikicode from a string.

{str len}	Returns a string's length.
{str ≥ len}	To check if a string is "longer or equally long" or "shorter" than a given length.
{str ≤ len}	To check if a string is "shorter or equally long" or "longer" than a given length.
{str ≠ len}	To check if a string is "not equal" or "equal" to a given length.

Analysis and searching

{str endswith}	To check if a string ends with a given string.
{str find}, {strfind short}	Returns the numerical location of a given string in a string.
{str find0}	Zero-based substring search.

{a or an}	Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel.
{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
Module:String, Module:String2, Module:Ustring: modules that together contain most necessary string functions. Magic words: About `{padleft:\|}`, `{lc:\|}`, `{formatnum:\|}` etc. ParserFunctions: About `{#titleparts:\|}, {#expr:\|}, {#ifeq:\|},` etc.