This template uses Lua :
The Template:str_find0 returns first appearance of a substring in a string, otherwise returns -1.template:str sub find which does the routine.
{{str find0 |<string1>|<string2>}}
It is zero-based. So no need for extra {{#expr:{{str find|}}-1}} calculations to use it in other templates. Handles strings up to 90 characters. Very fast on short strings. Uses enhanced algorithm to run the subroutine only when needed. {{str find0|abcdef|abc}} → 0
{{str find0|abcdef|def}} → 3
{{str find0|abcdef|ghi}} → -1
{{str find0|abcdef|abcdefghi}} → -1
String-handling templates
By counting {{str mid }} To return a substring specified by position and length. {{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. {{chop head and tail }} To crop a specified number of characters off the beginning and end.
{{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. {{str sub new }} Select a substr based on starting and ending index. {{str index }} Returns a given character from a string, but not accented letters.
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 matches quotes.
Dedicated {{delink }} Removes wikilink brackets (wikicode). {{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. {{remove unranked }} Removes the string "unranked_" from the left of a string (taxonomy). {{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.
Insertion, replacement and length
{{strloc insert }} Inserts a string at character location strloc, or appends if strloc<=0. {{loop }} Repeat character string a specified number of times. {{repeat }} Repeat a 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
{{str len }} Returns a string's length. {{iflenge }} [if len]gth [g]reater than or [e]qual to. {{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. {{str ≤ ≥ len }} To check if a string is "shorter", "equal", or "longer" than a given length.
Analysis and technical
{{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. {{str sub find }} Searches a substring in a string at the given offset. {{str letter }} Returns the number of letters that begin a string. {{str number }} Returns the number of numbers that begin a string. {{str gtr str }} Compares two strings for alphabetical order, and returns a value accordingly.
