Template:String-handling templates

Trimming templates:

• {{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.
• {{Trim}} — To trim any leading or trailing whitespace.
• {{First word}} — To trim down to the first space.
• {{Remove first word}} — To remove anything before the first space.
• {{Str letter/trim}} — To trim down to the beginning letters.
• {{Str number/trim}} — To trim down to the beginning numbers.
• {{Title without disambig}} — To trim off any parenthesis text at the end of a string.
• {{Title disambig text}} – Returns text in parenthesis at the end of a string.
• {{Str right}} — To trim the first specified number of characters.
• {{Str rightc}} — To trim the first specified number of characters, returns a parameter if the string is empty.
• {{Str rightmost}} — To trim down to the last specified number of characters.
• {{Str sub}} — To trim down to a specified number, starting at a given number from the left, less than 50.
• {{Substr any}} — To trim down to a specified number, starting at a given number from the left, less than 50, can extract accented letters.
• {{Str sub long}} — To trim down to a specified number, starting at a given number from the left, less than 100.

Inserting strings:

• {{Strloc insert}} - Inserts a string at character location strloc, or appends if strloc<=0.
• {{Strloc prefix}} - Extracts string prefix up to location strloc, or whole string if strloc<=0.
• {{Str rep}} — Returns the string, replacing the first occurrence of a specified string, with another string. Requires a match.
• {{Str repc}} — Returns the string, replacing the first occurrence of a specified string, with another string, if there is one.

Analyzing strings:

• {{Str endswith}} – To check if a string ends with a given string.
• {{Str find}} – Returns the numerical location of a given string in a string, up to 50 characters.
• {{Str find long}} – Returns the numerical location of a given string in a string, up to 80 characters.
• {{Strfind short}} – Searches for a short string in a longer (up to 99 char) string. Performs faster than {{str find}}
• {{Str index}} – Returns a given character from a string, but not accented letters.
• {{Str index any}} – Returns a given character from a string, but not a space.
• {{Chr}} – Returns a given character from a string, including a space.
• {{Str len}} – Returns a string's length. Can count up to 500 characters.
• {{Strlen quick}} – Gets string length quickly (better performance), up to 70 long.
• {{Strlen short}} – Gets length of short strings (1-50), using only 2 expansion levels.
• {{Str letter}} — Returns the number of letters that begin a string.
• {{Str number}} — Returns the number of numbers that begin a string.
• {{Ship prefix}} — Returns the length of a ship name prefix, if listed.

String length comparison templates:

• {{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.

Sandboxes and test cases:

• {{Str find/sandbox}}
• {{Str index/getchar/sandbox}}
• {{Str index/getchar/testcases}}
• {{Str index/sandbox}}
• {{Str index/testcases}}
• {{Str index any/sandbox}}
• {{Str index any/testcases}}
• {{Str left/sandbox}}
• {{Str len/core/sandbox}}
• {{Str len/sandbox}}
• {{Str len/testcases}}
• {{Str rightc/testcases}}
• {{Str ≠ len/sandbox}}
• {{Str ≠ len/testcases}}

Technical stuff:

• mw:Help:Magic words – About {{padleft:|}}.
• mw:Help:Extension:ParserFunctions – About {{#titleparts:|}}, {{#expr:|}}, {{#ifeq:|}}, etc.

Feature requests:

• bugzilla:6455 - Set $wgPFEnableStringFunctions = true on WMF wikis
• bugzilla:26092 - Enable or install string parsing wikimarkup functionality on WMF wikis

Frequency of use:

Wikipedia:Database reports/Templates transcluded on the most pages The frequency of use in other templates is roughly

• Str_left, Str_len, Str_len/core, Str_find/logic Str_≤_len Str_≥_len
• Str_index Str_index/logic Str_sub Strfind_short Strlen_quick Strloc_prefix
• Str_index/getchar Str_index_any Str_sub_long Str_right Substr_any Str_trim
• The rest of much less frequently used