The str Reference Manual

This is the str Reference Manual, version 0.19.1, generated automatically by Declt version 4.0 beta 2 "William Riker" on Sat Dec 03 20:42:55 2022 GMT+0.

Table of Contents


1 Introduction


2 Systems

The main system appears first, followed by any subsystem dependency.


2.1 str

Modern, consistent and terse Common Lisp string manipulation library.

Maintainer

vindarel <>

Author

vindarel <>

Home Page

https://github.com/vindarel/cl-str

Source Control

(GIT git@github.com:vindarel/cl-str.git)

Bug Tracker

https://github.com/vindarel/cl-str/issues

License

MIT

Long Description

[![Quicklisp](http://quickdocs.org/badge/cl-str.svg)](http://quickdocs.org/cl-str)
# A modern and consistent Common Lisp string manipulation library

(ql:quickload "str")

also on [Ultralisp](http://ultralisp.org/).

Why ?

* modernity, simplicity and discoverability:

- ‘(str:trim s)‘ instead of ‘ (string-trim ’(#\Space #\Newline #\Backspace #\Tab #\Linefeed #\Page #\Return #\Rubout) s))‘,
or ‘str:concat strings‘ instead of an unusual ‘format‘ construct; one discoverable library instead of many;

* consistence and composability, where ‘s‘ is always the last argument, which makes it
easier to feed pipes and arrows.

* fixing built-in surprises: ‘(string-downcase nil‘) => ‘"nil"‘ the string, whereas ‘(str:downcase nil)‘ => ‘nil‘.

The only dependency is ‘cl-ppcre‘.

<!– markdown-toc start - Don’t edit this section. Run M-x markdown-toc-refresh-toc –>
**Table of Contents**

- [A modern and consistent Common Lisp string manipulation library](#a-modern-and-consistent-common-lisp-string-manipulation-library)
- [Install](#install)
- [Global parameters](#global-parameters)
- [Functions](#functions)
- [Tweak whitespace](#tweak-whitespace)
- [trim ‘(s)‘](#trim-s)
- [collapse-whitespaces ‘(s)‘](#collapse-whitespaces-s)
- [To longer strings](#to-longer-strings)
- [join ‘(separator list-of-strings)‘](#join-separator-list-of-strings)
- [concat ‘(&rest strings)‘](#concat-rest-strings)
- [insert ‘(string/char index s)‘](#insert-stringchar-index-s)
- [repeat ‘(count s)‘](#repeat-count-s)
- [add-prefix, add-suffix ‘(items s)‘](#add-prefix-add-suffix-items-s)
- [pad ‘(len s &key (pad-side :right) (pad-char #\Space))‘, pad-left, pad-right, pad-center (new in 0.16, 2019/12)](#pad-len-s-key-pad-side-right-pad-char-space-pad-left-pad-right-pad-center-new-in-016-201912) - [To shorter strings](#to-shorter-strings)
- [substring ‘(start end s)‘](#substring-start-end-s)
- [s-first ‘(s)‘](#s-first-s)
- [s-last ‘(s)‘](#s-last-s)
- [s-rest ‘(s)‘](#s-rest-s)
- [s-nth ‘(n s)‘](#s-nth-n-s)
- [shorten ‘(len s &key ellipsis)‘](#shorten-len-s-key-ellipsis)
- [To a fixed length](#to-a-fixed-length)
- [fit ‘(len s)‘](#fit-len-s)
- [To and from lists](#to-and-from-lists)
- [words ‘(s)‘](#words-s)
- [unwords ‘(strings)‘](#unwords-strings)
- [lines ‘(s &key omit-nulls)‘](#lines-s-key-omit-nulls)
- [unlines ‘(strings)‘](#unlines-strings)
- [split ‘(separator s &key omit-nulls limit start end)‘](#split-separator-s-key-omit-nulls-limit-start-end)
- [rsplit ‘(separator s &key limit)‘](#rsplit-separator-s-key-limit)
- [split-omit-nulls](#split-omit-nulls)
- [To and from files](#to-and-from-files)
- [from-file ‘(filename)‘](#from-file-filename)
- [to-file ‘(filename s)‘](#to-file-filename-s)
- [Predicates](#predicates)
- [empty?, emptyp ‘(s)‘](#empty-emptyp-s)
- [blank?, blankp ‘(s)‘](#blank-blankp-s)
- [starts-with?, starts-with-p ‘(start s &key ignore-case)‘](#starts-with-starts-with-p-start-s-key-ignore-case)
- [ends-with?, ends-with-p ‘(end s &key ignore-case)‘](#ends-with-ends-with-p-end-s-key-ignore-case)
- [contains?, containsp ‘(substring s &key (ignore-case nil))‘](#contains-containsp-substring-s-key-ignore-case-nil)
- [s-member ‘(list s &key (ignore-case *ignore-case*) (test #’string=))‘](#s-member-list-s-key-ignore-case-ignore-case-test-string)
- [prefix?, prefixp and suffix?, suffixp ‘(items s)‘](#prefix-prefixp-and-suffix-suffixp-items-s)
- [Case](#case)
- [Functions to change case: camel-case, snake-case,... (new in 0.15, 2019/11)](#functions-to-change-case-camel-case-snake-case-new-in-015-201911)
- [downcase, upcase, capitalize ‘(s)‘ fixing a built-in suprise. (new in 0.11)](#downcase-upcase-capitalize-s-fixing-a-built-in-suprise-new-in-011)
- [downcasep, upcasep ‘(s)‘](#downcasep-upcasep-s)
- [alphap, lettersp ‘(s)‘](#alphap-lettersp-s)
- [alphanump, lettersnump ‘(s)‘](#alphanump-lettersnump-s)
- [ascii-p ‘(char/s)‘](#ascii-p-chars)
- [digitp ‘(s)‘](#digitp-s)
- [has-alpha-p, has-letters-p, has-alphanum-p ‘(s)‘](#has-alpha-p-has-letters-p-has-alphanum-p-s)
- [Others](#others)
- [replace-first ‘(old new s)‘](#replace-first-old-new-s)
- [replace-all ‘(old new s)‘](#replace-all-old-new-s)
- [replace-using ‘(plist s)‘](#replace-using-plist-s)
- [remove-punctuation (s &key replacement)](#remove-punctuation-s-key-replacement)
- [prefix ‘(list-of-strings)‘ (renamed in 0.9)](#prefix-list-of-strings-renamed-in-09)
- [suffix ‘(list-of-strings)‘](#suffix-list-of-strings)
- [count-substring ‘(substring s &key start end)‘](#count-substring-substring-s-key-start-end)
- [s-assoc-value ‘(alist key)‘](#s-assoc-value-alist-key)
- [Macros](#macros)
- [string-case](#string-case)
- [Changelog](#changelog)
- [Dev and test](#dev-and-test)
- [See also](#see-also)

<!– markdown-toc end –>

## Install

Install with [Quicklisp](https://www.quicklisp.org/beta/):

(ql:quickload :str)

Add it in your .asd’s project dependencies, and call functions with the ‘str‘ prefix. It is not recommended to ‘:use :str‘ in a package. It’s safer to use the ‘str‘ prefix.

Check its version:

(str:version)

To get a newer version, you need to update the Quicklisp dist (think
of QL as Debian’s apt rather than pip/npm/etc):

(ql:update-dist "quicklisp")

Don’t have a full Common Lisp development environment yet ? Get
[Portacle](https://shinmera.github.io/portacle/), a portable and
multiplatform development environment shipping Emacs, Quicklisp, SBCL
and Git. See also [editor
support](https://lispcookbook.github.io/cl-cookbook/editor-support.html)
(Vim, Lem, Atom, Eclipse,…).

## Global parameters

Some parameters are common to various functions and often used:
‘:ignore-case‘ and ‘:omit-nulls‘.

Consequently we can also manage them with global parameters:

~~~lisp
(let ((str:*ignore-case* t))
(str:ends-with? "BAR" "foobar"))
~~~

is equivalent to

~~~lisp
(str:ends-with? "BAR" "foobar" :ignore-case t)
~~~

## Functions

### Tweak whitespace

#### trim ‘(s)‘
Remove whitespaces at the beginning and end of ‘s‘.

“‘lisp
(trim " rst ") ;; => "rst"
“‘

Also ‘trim-left‘ and ‘trim-right‘.

Uses the built-in
[string-trim](https://lispcookbook.github.io/cl-cookbook/strings.html#trimming-blanks-from-the-ends-of-a-string)
where whitespaces are ‘’(#\Space #\Newline #\Backspace #\Tab #\Linefeed #\Page #\Return #\Rubout)‘.

#### collapse-whitespaces ‘(s)‘

Ensure there is only one space character between words. Remove newlines.

~~~lisp
(collapse-whitespaces "foo bar

baz")
;; "foo bar baz"
;;T
~~~

### To longer strings

#### join ‘(separator list-of-strings)‘

Join strings in list ‘list-of-strings‘ with ‘separator‘ (either a string or a char) in between.

“‘lisp
(join " " ’("foo" "bar" "baz")) ;; => "foo bar baz"
(join #\Space ’("foo" "bar" "baz")) ;; => "foo bar baz"
“‘

#### concat ‘(&rest strings)‘

Join strings into one.

“‘lisp
(concat "f" "o" "o") ;; => "foo"
“‘

Simple call of the built-in [concatenate](https://lispcookbook.github.io/cl-cookbook/strings.html#concatenating-strings).

We actually also have ‘uiop:strcat‘.

#### insert ‘(string/char index s)‘

Insert the given string (or character) at the index ‘index‘ into ‘s‘ and return a
new string.

If ‘index‘ is out of bounds, just return ‘s‘.

“‘lisp
(str:insert "l" 2 "helo") ; => "hello"

(str:insert "o" 99 "hell") : => "hell"
“‘

#### repeat ‘(count s)‘

Make a string of ‘s‘ repeated ‘count‘ times.

“‘lisp
(repeat 3 "foo") ;; => "foofoofoo"
“‘

#### add-prefix, add-suffix ‘(items s)‘

Respectively prepend or append ‘s‘ to the front of each item.

#### pad ‘(len s &key (pad-side :right) (pad-char #\Space))‘, pad-left, pad-right, pad-center (new in 0.16, 2019/12)

Fill ‘s‘ with characters until it is of the given length. By default,
add spaces on the right:

~~~lisp
(str:pad 10 "foo")
"foo "
~~~

* ‘pad-side‘: one of ‘:right‘ (the default), ‘:left‘ or ‘:center‘. See ‘*pad-side*‘.
* ‘pad-char‘: the padding character (or string of one character). Defaults to a space. See ‘*pad-char*‘.

~~~lisp
(str:pad 10 "foo" :pad-side :center :pad-char "+")
"+++foo++++"
~~~

If the given length is smaller than the length o ‘s‘, return ‘s‘.

Filling with spaces can easily be done with format:

~~~lisp
(format nil "~va" len s) ;; => "foo "
(format nil "~v@a" 10 "foo") ;; => " foo" (with @)
~~~

### To shorter strings

#### substring ‘(start end s)‘

Return the substring of ‘s‘ from ‘start‘ to ‘end‘.

It uses ‘subseq‘ with differences:

* argument order, s at the end
* ‘start‘ and ‘end‘ can be lower than 0 or bigger than the length of s.
* for convenience ‘end‘ can be nil or t to denote the end of the string.

Examples:

“‘lisp
(is "abcd" (substring 0 t "abcd") "t denotes the end of the string")
(is "abcd" (substring 0 nil "abcd") "nil too")
(is "abcd" (substring 0 100 "abcd") "end can be too large")
(is "abc" (substring 0 -1 "abcd") "end can be negative. Counts from the end.")
(is "" (substring 0 -100 "abcd") "end can be negative and too low")
(is "" (substring 100 1 "abcd") "start can be too big")
(is "abcd" (substring -100 4 "abcd") "start can also be too low")
(is "" (substring 2 1 "abcd") "start is bigger than end")
“‘

#### s-first ‘(s)‘

Return the first letter of ‘s‘.

Examples:

“‘lisp
(s-first "foobar") ;; => "f"
(s-first "") ;; => ""
“‘

#### s-last ‘(s)‘

Return the last letter of ‘s‘.

#### s-rest ‘(s)‘

Return the rest substring of ‘s‘.

Examples:

“‘lisp
(s-rest "foobar") ;; => "oobar"
(s-rest "") ;; => ""
“‘

#### s-nth ‘(n s)‘

Return the nth letter of ‘s‘.

Examples:

“‘lisp
(s-nth 3 "foobar") ;; => "b"
(s-nth 3 "") ;; => ""
“‘

You could also use

~~~lisp
(elt "test" 1)
;; => #\e
(string (elt "test" 1))
;; => "e"
~~~

#### shorten ‘(len s &key ellipsis)‘

If ‘s‘ is longer than ‘len‘, truncate it and add an ellipsis at the
end (‘...‘ by default). ‘s‘ is cut down to ‘len‘ minus the length of
the ellipsis (3 by default).

Optionally, give an ‘:ellipsis‘ keyword argument. Also set it globally
with ‘*ellipsis*‘.

~~~lisp
(shorten 8 "hello world")
;; => "hello..."
(shorten 3 "hello world")
;; => "..."
(shorten 8 "hello world" :ellipsis "-")
;; => "hello w-"
(let ((*ellipsis* "-"))
(shorten 8 "hello world"))
;; => "hello w-"
~~~

### To a fixed length

#### fit ‘(len s)‘

Fit this string to the given length:

- if it’s too long, shorten it (showing the ‘ellipsis‘),
- if it’s too short, add paddding (to the side ‘pad-side‘, adding the
character ‘pad-char‘).

As such, it accepts the same key arguments as ‘str:shorten‘ and
‘str:pad‘: ‘ellipsis‘, ‘pad-side‘, ‘pad-char‘…

~~~lisp
CL-USER> (str:fit 10 "hello" :pad-char "+")
"hello+++++"

CL-USER> (str:fit 10 "hello world" :ellipsis "…")
"hello wor…"
~~~

If, like me, you want to print a list of data as a table, see:

- [cl-ansi-term](https://github.com/vindarel/cl-ansi-term/)

~~~lisp
CL-USER> (ql:quickload "cl-ansi-term")
CL-USER> (term:table ’(("name" "age" "email")
("me" 7 "some@blah")
("me" 7 "some@with-some-longer.email"))
:column-width ’(10 4 20))
+———+—+——————-+
|name |age|email |
+———+—+——————-+
|me |7 |some@blah |
+———+—+——————-+
|me |7 |some@with-some-l(…)|
+———+—+——————-+
~~~

- [cl-ascii-table](https://github.com/telephil/cl-ascii-table/)

~~~lisp
CL-USER> (ql:quickload "cl-ascii-table")
CL-USER> (let ((table (ascii-table:make-table ’("Id" "Name" "Amount") :header "Infos")))
(ascii-table:add-row table ’(1 "Bob" 150))
(ascii-table:add-row table ’(2 "Joe" 200))
(ascii-table:add-separator table)
(ascii-table:add-row table ’("" "Total" 350))
(ascii-table:display table))

.———————.
| Infos |
+—-+——-+——–+
| Id | Name | Amount |
+—-+——-+——–+
| 1 | Bob | 150 |
| 2 | Joe | 200 |
+—-+——-+——–+
| | Total | 350 |
+—-+——-+——–+
NIL
~~~

### To and from lists

#### words ‘(s)‘

Return list of words, which were delimited by whitespace.

#### unwords ‘(strings)‘

Join the list of strings with a whitespace.

#### lines ‘(s &key omit-nulls)‘

Split string by newline character and return list of lines.

A terminal newline character does *not* result in an extra empty string
(new in **v0.14**, october 2019).

#### unlines ‘(strings)‘

Join the list of strings with a newline character.

#### split ‘(separator s &key omit-nulls limit start end)‘

Split into subtrings (unlike cl-ppcre, without a regexp). If
‘omit-nulls‘ is non-nil, zero-length substrings are omitted.

“‘lisp
(split "+" "foo++bar") ;; => ("foo" "" "bar")
(split #\+ "foo++bar") ;; => ("foo" "" "bar")
(split "+" "foo++bar" :omit-nulls t) ;; => ("foo" "bar")
“‘

cl-ppcre has an inconsistency such that when the separator appears at
the end, it doesn’t return a trailing empty string. But we do **since
v0.14** (october, 2019).

#### rsplit ‘(separator s &key limit)‘

Similar to ‘split‘, but split from the end. In particular, this will
be different from ‘split‘ when a ‘:limit‘ is provided, but in more
obscure cases it can be different when there are multiple different
ways to split the string.

“‘lisp
(rsplit "/" "/var/log/mail.log" :limit 2) ;; => ("/var/log" "mail.log")
“‘

~~~lisp
(cl-ppcre:split " " "a b c ")
("a" "b" "c")

(str:split " " "a b c ")
("a" "b" "c" "")
~~~

#### split-omit-nulls

Because it is a common pattern and it can be clearer than an option
coming after many parenthesis.

### To and from files

#### from-file ‘(filename)‘

Read the file and return its content as a string.

Example: ‘(str:from-file "path/to/file.txt")‘.

‘:external-format‘: if nil, the system default. Can be bound to ‘:utf-8‘.

But you might just call
[uiop’s ‘uiop:read-file-string‘](https://github.com/fare/asdf/blob/master/uiop/stream.lisp#L445)
directly.

There is also ‘uiop:read-file-lines‘.

#### to-file ‘(filename s)‘

Write the string ‘s‘ to the file ‘filename‘. If the file does not
exist, create it, if it already exists, replace it.

Options:

* ‘:if-does-not-exist‘: ‘:create‘ (default), ‘:error‘
* ‘:if-exists‘: ‘:supersede‘ (default), ‘:append‘, ‘:overwrite‘, ‘:rename‘, ‘:error‘,...

Returns the string written to file.

### Predicates

#### empty?, emptyp ‘(s)‘

True if ‘s‘ is nil or the empty string:

“‘lisp
(empty? nil) ;; => T
(empty? "") ;; => T
(empty? " ") ;; => NIL
“‘

See also ‘str:non-empty-string-p‘, which adds a ‘stringp‘ check.

#### blank?, blankp ‘(s)‘

True if ‘s‘ is empty or only contains whitespaces.

(blankp "") ;; => T
(blankp " ") ;; => T
(emptyp " ") ;; => NIL

See also ‘str:non-blank-string-p‘.

#### starts-with?, starts-with-p ‘(start s &key ignore-case)‘

True if ‘s‘ starts with the substring ‘start‘, nil otherwise. Ignore
case by default.

(starts-with? "foo" "foobar") ;; => T
(starts-with? "FOO" "foobar") ;; => NIL
(starts-with? "FOO" "foobar" :ignore-case t) ;; => T

Calls ‘string=‘ or ‘string-equal‘ depending on the case, with their
‘:start‘ and ‘:end‘ delimiters.

#### ends-with?, ends-with-p ‘(end s &key ignore-case)‘

True if ‘s‘ ends with the substring ‘end‘. Ignore case by default.

(ends-with? "bar" "foobar") ;; => T

#### contains?, containsp ‘(substring s &key (ignore-case nil))‘

Return true if ‘s‘ contains ‘substring‘, nil otherwise. Ignore the
case with ‘:ignore-case t‘ (don’t ignore by default).

Based on a simple call to the built-in ‘search‘ (which returns the
position of the substring).

#### s-member ‘(list s &key (ignore-case *ignore-case*) (test #’string=))‘

Return T if ‘s’ is a member of ‘list’. Do not ignore case by default.

NOTE: ‘s-member‘’s arguments’ order is the reverse of CL’s ‘member‘.

If ‘:ignore-case‘ or ‘*ignore-case*‘ are not nil, ignore case (using
‘string-equal‘ instead of ‘string=‘).

Unlike CL’s ‘member‘, ‘s-member‘ returns T or NIL, instead of the tail of LIST whose first element satisfies the test.

#### prefix?, prefixp and suffix?, suffixp ‘(items s)‘

Return ‘s‘ if all ‘items‘ start (or end) with it.

See also ‘uiop:string-prefix-p prefix s‘, which returns ‘t‘ if
‘prefix‘ is a prefix of ‘s‘,

and ‘uiop:string-enclosed-p prefix s suffix‘, which returns ‘t‘ if ‘s‘
begins with ‘prefix‘ and ends with ‘suffix‘.

### Case

#### Functions to change case: camel-case, snake-case,... (new in 0.15, 2019/11)

We use
[cl-change-case](https://github.com/rudolfochrist/cl-change-case/) (go
thank him and star the repo!).

The available functions are:

“‘
:no-case (s &key replacement)
:camel-case (s &key merge-numbers)
:dot-case
:header-case
:param-case
:pascal-case
:path-case
:sentence-case
:snake-case
:swap-case
:title-case
:constant-case
“‘

More documentation and examples are there.

#### downcase, upcase, capitalize ‘(s)‘ fixing a built-in suprise. (new in 0.11)

The functions ‘str:downcase‘, ‘str:upcase‘ and ‘str:capitalize‘ return
a new string. They call the built-in ‘string-downcase‘,
‘string-upcase‘ and ‘string-capitalize‘ respectively, but they fix
something surprising. When the argument is ‘nil‘, the built-ins return
"nil" or "NIL" or "Nil", a *string*. Indeed, they work on anything:

(string-downcase nil) ;; => "nil" the string !
(str:downcase nil) ;; nil

(string-downcase :FOO) ;; => "foo"

#### downcasep, upcasep ‘(s)‘

These functions return ‘t‘ if the given string contains at least one
letter and all its letters are lowercase or uppercase, respectively.

“‘lisp
(is (downcasep " a+,. ") t "downcasep with one letter and punctuation is true.")
(is (downcasep " +,. ") nil "downcasep with only punctuation or spaces is false")
“‘

#### alphap, lettersp ‘(s)‘

‘alphap‘ returns t if ‘s‘ contains at least one character and all characters are
alpha (as in ‘"^[a-zA-Z]+$"‘).

‘lettersp‘ works for unicode letters too.

~~~lisp
(is (alphap "abcdeé") nil "alphap is nil with accents")
(is (lettersp "éß") t "lettersp is t with accents and ß")
~~~

#### alphanump, lettersnump ‘(s)‘

‘alphanump‘ returns t if ‘s‘ contains at least one character and all characters are alphanumeric (as in ‘^[a-zA-Z0-9]+$‘).

‘lettersnump‘ also works on unicode letters (as in ‘^[\\p{L}a-zA-Z0-9]+$‘).

#### ascii-p ‘(char/s)‘

Return t if the character / string is an ASCII character / is composed of ASCII characters.

An ASCII character has a ‘char-code‘ inferior to 128.

#### digitp ‘(s)‘

Returns t if ‘s‘ contains at least one character and all characters are numerical (as for ‘digit-char-p‘).

#### has-alpha-p, has-letters-p, has-alphanum-p ‘(s)‘

Return t if ‘s‘ has at least one alpha, letter, alphanum character (as with ‘alphanumericp‘).

### Others

#### replace-first ‘(old new s)‘

Replace the first occurence of ‘old‘ by ‘new‘ in ‘s‘. Arguments are not regexs.

“‘lisp
(replace-first "a" "o" "faa") ;; => "foa"
“‘

Uses
[cl-ppcre:regex-replace](http://weitz.de/cl-ppcre/#regex-replace)
but quotes the user input to not treat it as a regex.

#### replace-all ‘(old new s)‘

Replace all occurences of ‘old‘ by ‘new‘ in ‘s‘. Arguments are not regexs.

“‘lisp
(replace-all "a" "o" "faa") ;; => "foo"
“‘

Uses
[cl-ppcre:regex-replace-all](http://weitz.de/cl-ppcre/#regex-replace-all)
but quotes the user input to not treat it as a regex.

If the replacement is only one character, you can use ‘substitute‘:

(substitute #\+ #\Space "foo bar baz")
;; "foo+bar+baz"

#### replace-using ‘(plist s)‘

Replace all associations given by pairs in a plist and return a new string.

The plist is a list alternating a string to replace (case sensitive) and its replacement.

Example:

“‘lisp
(replace-using (list "%phone%" "987")
"call %phone%")
;; "call 987"
“‘

#### remove-punctuation (s &key replacement)

Remove the punctuation characters from ‘s‘, replace them with
‘replacement‘ (defaults to a space) and strip continuous whitespace.

~~~lisp
(str:remove-punctuation "I say: - ’Hello, world?’") ;; => "I say Hello world"
~~~

Use ‘str:no-case‘ to remove punctuation and return the string as lower-case.

#### prefix ‘(list-of-strings)‘ (renamed in 0.9)

(renamed from ‘common-prefix‘ in v0.9)

Find the common prefix between strings.

Example: ‘(str:prefix ’(\"foobar\" \"foozz\"))‘ => \"foo\"

Uses the built-in ‘mismatch‘, that returns the position at which
the strings fail to match.

Return a string or nil when the input is the void list.

#### suffix ‘(list-of-strings)‘

Find the common suffix between strings.

#### count-substring ‘(substring s &key start end)‘
Counts the non-overlapping occurrences of ‘substring‘ in ‘s‘.
You could also count only the ocurrencies between ‘start‘ and ‘end‘.

Examples:
~~~ lisp
(count-substring "abc" "abcxabcxabc")
;; => 3
~~~
~~~lisp
(count-substring "abc" "abcxabcxabc" :start 3 :end 7)
;; => 1
~~~

#### s-assoc-value ‘(alist key)‘

Returns the value of a cons cell in ‘alist‘ with key ‘key‘, when ‘key‘ is a string.
The second return value is the cons cell, if any was matched.

The arguments are in the opposite order of ‘cl:assoc‘’s, but are consistent
with ‘alexandria:assoc-value‘ (and ‘str‘).

“‘lisp
(s-assoc-value ’(("hello" . 1)) "hello")
;; 1
;; ("hello" . 1)

(alexandria:assoc-value ’(("hello" . 1)) "hello")
;; NIL
(alexandria:assoc-value ’(("hello" . 1)) "hello" :test #’string=)
;; 1
;; ("hello" . 1)

(assoc "hello" ’(("hello" . 1)))
;; NIL
(assoc "hello" ’(("hello" . 1)) :test #’string=)
;; ("hello" . 1)
(cdr *)
;; 1
“‘

## Macros

### string-case

A case-like macro that works with strings (CL case’s test function is
‘eql‘, and that isn’t enough for strings).

Example:

~~~lisp
(str:string-case input
("foo" (do something))
(nil (print "input is nil")
(otherwise (print "non of the previous forms was caught.")))
~~~

You might also like pattern matching. The example below with
[trivia](https://github.com/guicho271828/trivia/) is very similar:

~~~lisp
(trivia:match "hey"
("hey" (print "it matched"))
(otherwise :nothing))
~~~

Note that there is also http://quickdocs.org/string-case/.

## Changelog

* June, 2022: small breaking change: fixed ‘prefix?‘ when used with a smaller prefix: "f" was not recognized as a prefix of "foobar" and "foobuz", only "foo" was. Now it is fixed. Same for ‘suffix?‘.
* Feb, 2022: added ‘fit‘: fit the string to the given length: either shorten it, either padd padding.
* 0.20, May, 2021: added ‘ascii-p‘.
* 0.19.1, May, 2021: speed up ‘join‘ (by a factor of 4).
* 0.19, October, 2020: added s-member
*0.18.1, September, 2020: fix replace-all edge case when the replacement string ends with two backslashes and a single quote.
* 0.18, June, 2020: added ‘replace-using‘.
* 0.17, April 2020:
- added ‘collapse-whitespaces‘
- ‘join‘ and ‘split‘ also accept a char as separator
- fixed ‘remove-punctuation‘ that did not respect the case. Use ‘no-case‘ for this
- fixed ‘from-file‘ "odd number of arguments" error.
* 0.16, November 2019: added ‘pad‘, ‘pad-[left, right, center]‘.
* 0.15, October 2019: added functions to change case (based on cl-change-case).
added remove-punctuation.
* 0.14, October, 2019: fixed the cl-ppcre inconsistency in ‘split‘ and ‘lines‘. A trailing separator now returns a trailing empty string.

Before:

~~~lisp
(str:split " " "a b c ")
("a" "b" "c") ;; like cl-ppcre:split
~~~

Now:

~~~lisp
(str:split " " "a b c ")
("a" "b" "c" "")
~~~

* august, 2019: deprecated ‘prune‘, renamed to ‘shorten‘.
* added ‘:limit‘ to ‘split‘.
* 0.13 june, 2019
- added ‘insert‘
* 0.12
- added case predicates (‘downcasep‘, ‘alphap‘, ‘has-x‘ and friends).
* 0.11 (Quicklisp end of march, 2019, also in Ultralisp)
- added ‘str:downcase‘, ‘str:upcase‘ and ‘str:capitalize‘, that fix the ‘nil‘ argument surprise.
* 0.10
- ‘split‘ doesn’t fix cl-ppcre’s inconsistency anymore (when the separator appears at the end). See issue #18. So ‘(str:split "xx" "fooxxbarxx")‘ doesn’t return a trailing ‘""‘.
- added ‘s-last‘
- ‘s-first‘ and friends return ‘nil‘ when appropriate, not ‘""‘.
* 0.9
- added ‘s-first‘ , ‘s-rest‘ and ‘s-nth‘
- added ‘prefix‘ and ‘suffix‘ functions and predicates.
- added ‘prune‘.
* 0.8 added ‘string-case‘
* 0.7 added ‘version‘
* 0.6 added ‘split-omit-nulls‘ (QL, january 2018)
* 0.5 added ‘common-prefix‘
* 0.4 added ‘from-file‘ and ‘to-file‘.
* 0.3 added ‘substring‘.

## Dev and test

Test with [prove](https://github.com/fukamachi/prove).

(ql:quickload :str.test)
(load "test/test-str.lisp")

## See also

* the [Common Lisp Cookbook](https://lispcookbook.github.io/cl-cookbook/strings.html), strings page.
* my [Common Lisp course on Udemy: from novice to effective developer](https://www.udemy.com/course/common-lisp-programming/?referralCode=2F3D698BBC4326F94358). Check out my blog for regular coupons.
* https://lisp-journey.gitlab.io/
* video: [how to create a Common Lisp project from scratch with our project generator](https://www.youtube.com/watch?v=XFc513MJjos): it sums up in 5 minutes what took me a much longer time to gather.

Inspired by the famous Emacs Lisp’s [s.el](https://github.com/magnars/s.el).

Version

0.19.1

Dependencies
  • cl-ppcre (system).
  • cl-ppcre-unicode (system).
  • cl-change-case (system).
Source

str.asd.

Child Components

3 Files

Files are sorted by type and then listed depth-first from the systems components trees.


3.1 Lisp


3.1.1 str/str.asd

Source

str.asd.

Parent Component

str (system).

ASDF Systems

str.


3.1.2 str/str.lisp

Source

str.asd.

Parent Component

str (system).

Packages

str.

Public Interface
Internals

3.2 Static


3.2.1 str/README.md

Source

str.asd.

Parent Component

str (system).


4 Packages

Packages are listed by definition order.


4.1 str

Source

str.lisp.

Use List

common-lisp.

Public Interface
Internals

5 Definitions

Definitions are sorted by export status, category, package, and then by lexicographic order.


5.1 Public Interface


5.1.1 Special variables

Special Variable: *ellipsis*

Ellipsis to add to the end of a truncated string (see ‘shorten’).

Package

str.

Source

str.lisp.

Special Variable: *ignore-case*
Package

str.

Source

str.lisp.

Special Variable: *omit-nulls*
Package

str.

Source

str.lisp.

Special Variable: *pad-char*

Padding character to use with ‘pad’. It can be a string of one character.

Package

str.

Source

str.lisp.

Special Variable: *pad-side*

The side of the string to add padding characters to. Can be one of :right, :left and :center.

Package

str.

Source

str.lisp.

Special Variable: +version+
Package

str.

Source

str.lisp.


5.1.2 Macros

Macro: string-case (str &body forms)

A case-like macro that works with strings (case works only with symbols).

Example:

(str:string-case input
("foo" (do something))
(nil (print "input is nil")
(otherwise (print "none of the previous forms was caught")))

You might also like pattern matching. The example below with optima is very similar:

(optima:match "hey"
("hey" (print "it matched"))
(otherwise :nothing))

Note that there is also http://quickdocs.org/string-case/.

Package

str.

Source

str.lisp.


5.1.3 Ordinary functions

Function: add-prefix (items s)

Prepend s to the front of each items.

Package

str.

Source

str.lisp.

Function: add-suffix (items s)

Append s to the end of eahc items.

Package

str.

Source

str.lisp.

Function: alpha? (s)

Return t if ‘s’ contains at least one character and all characters are alpha (in [a-zA-Z]). See also ‘lettersp’, which checks for unicode letters.

Package

str.

Alias for

alphap.

Function: alphanum? (s)

Return t if ‘s’ contains at least one character and all characters are alphanumeric. See also ‘lettersnump’ which also works on unicode letters.

Package

str.

Alias for

alphanump.

Function: alphanump (s)

Return t if ‘s’ contains at least one character and all characters are alphanumeric. See also ‘lettersnump’ which also works on unicode letters.

Package

str.

Source

str.lisp.

Function: alphap (s)

Return t if ‘s’ contains at least one character and all characters are alpha (in [a-zA-Z]). See also ‘lettersp’, which checks for unicode letters.

Package

str.

Source

str.lisp.

Function: ascii-char-p (char)

Return t if ‘char’ is an ASCII char (its char code is below 128).

Package

str.

Source

str.lisp.

Function: ascii-p (char/s)

If ‘char/s’ is a character, return t if it is an ASCII character (its char code is below 128). If ‘char/s’ is a string, return t if every character is ASCII.

Package

str.

Source

str.lisp.

Function: blank? (s)

Is s nil or only contains whitespaces ?

Package

str.

Alias for

blankp.

Function: blankp (s)

Is s nil or only contains whitespaces ?

Package

str.

Source

str.lisp.

Function: capitalize (s)

Return the capitalized version of ‘s’.
Calls the built-in ‘string-capitalize’, but returns nil if ‘s’ is nil (instead of the string "Nil").

Package

str.

Source

str.lisp.

Function: collapse-whitespaces (s)

Ensure there is only one space character between words. Remove newlines.

Package

str.

Source

str.lisp.

Function: common-prefix (items)
Package

str.

Source

str.lisp.

Function: concat (&rest strings)

Join all the string arguments into one string.

Package

str.

Source

str.lisp.

Function: contains? (substring s &key ignore-case)

Return ‘t‘ if ‘s‘ contains ‘substring‘, nil otherwise. Ignore the case with ‘:ignore-case t‘. A simple call to the built-in ‘search‘ (which returns the position of the substring).

Package

str.

Alias for

containsp.

Function: containsp (substring s &key ignore-case)

Return ‘t‘ if ‘s‘ contains ‘substring‘, nil otherwise. Ignore the case with ‘:ignore-case t‘. A simple call to the built-in ‘search‘ (which returns the position of the substring).

Package

str.

Source

str.lisp.

Function: count-substring (substring s &key start end)

Return the non-overlapping occurrences of ‘substring’ in ‘s’.
You could also count only the ocurrencies between ‘start’ and ‘end’.

Examples:
(count-substring "abc" "abcxabcxabc")
;; => 3

(count-substring "abc" "abcxabcxabc" :start 3 :end 7)
;; => 1

Package

str.

Source

str.lisp.

Function: digit? (s)

Return t if ‘s’ contains at least one character and all characters are numerical.

Package

str.

Alias for

digitp.

Function: digitp (s)

Return t if ‘s’ contains at least one character and all characters are numerical.

Package

str.

Source

str.lisp.

Function: downcase (s)

Return the lowercase version of ‘s’.
Calls the built-in ‘string-downcase’, but returns nil if ‘s’ is nil (instead of the string "nil").

Package

str.

Source

str.lisp.

Function: downcase? (s)

Return t if all alphabetical characters of ‘s’ are lowercase, and ‘s’ contains at least one letter.

Package

str.

Alias for

downcasep.

Function: downcasep (s)

Return t if all alphabetical characters of ‘s’ are lowercase, and ‘s’ contains at least one letter.

Package

str.

Source

str.lisp.

Function: empty? (s)

Is s nil or the empty string ?

Package

str.

Alias for

emptyp.

Function: emptyp (s)

Is s nil or the empty string ?

Package

str.

Source

str.lisp.

Function: ends-with-p (end s &key ignore-case)

Return t if s ends with the substring ’end’, nil otherwise.

Package

str.

Source

str.lisp.

Function: ends-with? (end s &key ignore-case)

Return t if s ends with the substring ’end’, nil otherwise.

Package

str.

Alias for

ends-with-p.

Function: fit (len s &key pad-char pad-side ellipsis)

Fit this string to the given length:
- if it’s too long, shorten it (showing the ‘ellipsis’),
- if it’s too short, add paddding (to the side ‘pad-side’, adding the character ‘pad-char’).

Package

str.

Source

str.lisp.

Function: from-file (pathname &rest keys)

Read the file and return its content as a string.

It simply uses uiop:read-file-string. There is also uiop:read-file-lines.

Example: (str:from-file "path/to/file.txt" :external-format :utf-8)

- external-format: if nil, the system default. Can be bound to :utf-8.

Package

str.

Source

str.lisp.

Function: has-alpha-p (s)

Return t if ‘s’ has at least one alpha character ([a-zA-Z]).

Package

str.

Source

str.lisp.

Function: has-alphanum-p (s)

Return t if ‘s’ has at least one alphanumeric character.

Package

str.

Source

str.lisp.

Function: has-letters-p (s)

Return t if ‘s’ contains at least one letter (considering unicode, not only alpha characters).

Package

str.

Source

str.lisp.

Function: insert (string/char index s)

Insert the given string (or character) at the ‘index’ into ‘s’ and return a new string.

If ‘index’ is out of bounds, ignore and return ‘s’.

Package

str.

Source

str.lisp.

Function: join (separator strings)

Join all the strings of the list with a separator.

‘separator’ can be a string or a character.

Example:
(str:join "," ’("a" "b" "c")
=> "a,b,c"

Package

str.

Source

str.lisp.

Function: letters? (s)

Return t if ‘s’ contains only letters (including unicode letters).

(alphap "éß") ;; => nil
(lettersp "éß") ;; => t

Package

str.

Alias for

lettersp.

Function: lettersnump (s)

Return t if ‘s’ contains only letters (including unicode letters) and digits.

Package

str.

Source

str.lisp.

Function: lettersp (s)

Return t if ‘s’ contains only letters (including unicode letters).

(alphap "éß") ;; => nil
(lettersp "éß") ;; => t

Package

str.

Source

str.lisp.

Function: lines (s &key omit-nulls)

Split the string by newline characters and return a list of lines. A terminal newline character does NOT result in an extra empty string.

Package

str.

Source

str.lisp.

Function: non-blank-string-p (s)

Return t if ‘s’ is a string and is non blank (it doesn’t exclusively contain whitespace characters).

Like ‘(not (blankp s))’, with a ‘stringp’ check. Useful in context.

Package

str.

Source

str.lisp.

Function: non-empty-string-p (s)

Return t if ‘s’ is a string and is non-empty.

Like ‘(not (emptyp s))’, with a ‘stringp’ check. Useful in context.

Package

str.

Source

str.lisp.

Function: numeric? (s)

Return t if ‘s’ contains at least one character and all characters are numerical.

Package

str.

Alias for

digitp.

Function: numericp (s)

Return t if ‘s’ contains at least one character and all characters are numerical.

Package

str.

Alias for

digitp.

Function: pad (len s &key pad-side pad-char)

Fill ‘s’ with characters until it is of the given length. By default, add spaces on the right.

Filling with spaces can be done with format:

(format nil "~v@a" len s) ;; with or without the @ directive

‘pad-side’: to pad ‘:right’ (the default), ‘:left’ or ‘:center’.
‘pad-char’: padding character (or string of one character). Defaults to a space.

Package

str.

Source

str.lisp.

Function: pad-center (len s &key pad-char)
Package

str.

Source

str.lisp.

Function: pad-left (len s &key pad-char)
Package

str.

Source

str.lisp.

Function: pad-right (len s &key pad-char)
Package

str.

Source

str.lisp.

Function: prefix (items)

Find the common prefix between strings.

Uses the built-in ‘mismatch’, that returns the position at which the strings fail to match.

Example: ‘(str:prefix ’("foobar" "foozz"))‘ => "foo"

- items: list of strings
- Return: a string.

Package

str.

Source

str.lisp.

Function: prefix? (items prefix)

Return PREFIX if all ITEMS start with it.

Package

str.

Alias for

prefixp.

Function: prefixp (items prefix)

Return PREFIX if all ITEMS start with it.

Package

str.

Source

str.lisp.

Function: prune (len s &key ellipsis)

If s is longer than ‘len’, truncate it to this length and add the ‘*ellipsis*’ at the end ("..." by default). Cut it down to ‘len’ minus the length of the ellipsis.

Package

str.

Alias for

shorten.

Function: remove-punctuation (s &key replacement)

Remove the punctuation characters from ‘s’, replace them with ‘replacement’ (defaults to a space) and strip continuous whitespace.

Package

str.

Source

str.lisp.

Function: repeat (count s)

Make a string of S repeated COUNT times.

Package

str.

Source

str.lisp.

Function: replace-all (old new s)

Replace all occurences of ‘old‘ by ‘new‘ in ‘s‘. Arguments are not regexs.

Package

str.

Source

str.lisp.

Function: replace-first (old new s)

Replace the first occurence of ‘old‘ by ‘new‘ in ‘s‘. Arguments are not regexs.

Package

str.

Source

str.lisp.

Function: replace-using (plist s)

Replace all associations given by pairs in a plist and return a new string.

The plist is a list alternating a string to replace (case sensitive) and its replacement.

Example:
(replace-using (list "{{phone}}" "987")
"call {{phone}}")
=>
"call 987"

It calls ‘replace-all’ as many times as there are replacements to do.

Package

str.

Source

str.lisp.

Function: rsplit (sep s &key omit-nulls limit)

Similar to ‘split‘, except we split from the end. In particular, the results will be be different when ‘limit‘ is provided.

Package

str.

Source

str.lisp.

Function: s-assoc-value (alist key)

Return the value of a cons cell in ‘alist’ with key ‘key’, tested with ‘string=’.
The second return value is the cons cell.

Package

str.

Source

str.lisp.

Function: s-first (s)

Return the first substring of ‘s’.

Package

str.

Source

str.lisp.

Function: s-last (s)

Return the last substring of ‘s’.

Package

str.

Source

str.lisp.

Function: s-member (list s &key test ignore-case)

Return T if ‘s’ is a member of ‘list’. Do not ignore case by default.

NOTE: S-MEMBER’s arguments’ order is the reverse of CL:MEMBER.

If ‘:ignore-case’ or ‘*ignore-case*’ are not nil, ignore case (using ‘string-equal’ instead of ‘string=’).

Unlike CL:MEMBER, S-MEMBER returns T or NIL, instead of the tail of LIST whose first element satisfies the test.

Package

str.

Source

str.lisp.

Function: s-nth (n s)

Return the nth substring of ‘s’.

You could also use (string (elt "test" 1)) ;; => "e"

Package

str.

Source

str.lisp.

Function: s-rest (s)

Return the rest substring of ‘s’.

Package

str.

Source

str.lisp.

Function: shorten (len s &key ellipsis)

If s is longer than ‘len’, truncate it to this length and add the ‘*ellipsis*’ at the end ("..." by default). Cut it down to ‘len’ minus the length of the ellipsis.

Package

str.

Source

str.lisp.

Function: split (separator s &key omit-nulls limit start end)

Split s into substring by separator (cl-ppcre takes a regex, we do not).

‘limit’ limits the number of elements returned (i.e. the string is split at most ‘limit’ - 1 times).

Package

str.

Source

str.lisp.

Function: split-omit-nulls (separator s)

Call split with :omit-nulls to t.

Can be clearer in certain situations.

Package

str.

Source

str.lisp.

Function: starts-with-p (start s &key ignore-case)

Return t if S starts with the substring ‘START’, nil otherwise.

START can be a string or a character.

Package

str.

Source

str.lisp.

Function: starts-with? (start s &key ignore-case)

Return t if S starts with the substring ‘START’, nil otherwise.

START can be a string or a character.

Package

str.

Alias for

starts-with-p.

Function: substring (start end s)

Return the substring of ‘s’ from ‘start’ to ‘end’.

It uses ‘subseq’ with differences:
- argument order, s at the end
- ‘start’ and ‘end’ can be lower than 0 or bigger than the length of s. - for convenience ‘end’ can be nil or t to denote the end of the string.

Package

str.

Source

str.lisp.

Function: suffix (items)

Find the common suffix between strings.

Uses the built-in ‘mismatch’, that returns the position at which the strings fail to match.

Example: ‘(str:suffix ’("foobar" "zzbar"))‘ => "bar"

- items: list of strings
- Return: a string.

Package

str.

Source

str.lisp.

Function: suffix? (items suffix)

Return ‘suffix’ if all items end with it. Otherwise, retur nil

Package

str.

Alias for

suffixp.

Function: suffixp (items suffix)

Return ‘suffix’ if all items end with it. Otherwise, retur nil

Package

str.

Source

str.lisp.

Function: to-file (pathname s &key if-exists if-does-not-exist)

Write string ‘s’ to file ‘pathname’. If the file does not exist, create it (use ‘:if-does-not-exist’), if it already exists, replace its content (‘:if-exists’).

Returns the string written to file.

Package

str.

Source

str.lisp.

Function: trim (s)

Remove whitespaces at the beginning and end of s. @begin[lang=lisp](code)
(trim " foo ") ;; => "foo"
@end(code)

Package

str.

Source

str.lisp.

Function: trim-left (s)

Remove whitespaces at the beginning of s.

Package

str.

Source

str.lisp.

Function: trim-right (s)

Remove whitespaces at the end of s.

Package

str.

Source

str.lisp.

Function: unlines (strings)

Join the list of strings with a newline character.

Package

str.

Source

str.lisp.

Function: unwords (strings)

Join the list of strings with a whitespace.

Package

str.

Source

str.lisp.

Function: upcase (s)

Return the uppercase version of ‘s’.
Call the built-in ‘string-upcase’, but return nil if ‘s’ is nil (instead of the string "NIL").

Package

str.

Source

str.lisp.

Function: upcase? (s)

Return t if all alphabetical characters of ‘s’ are uppercase.

Package

str.

Alias for

upcasep.

Function: upcasep (s)

Return t if all alphabetical characters of ‘s’ are uppercase.

Package

str.

Source

str.lisp.

Function: version ()
Package

str.

Source

str.lisp.

Function: words (s &key limit)

Return list of words, which were delimited by white space. If the optional limit is 0 (the default), trailing empty strings are removed from the result list (see cl-ppcre).

Package

str.

Source

str.lisp.


5.2 Internals


5.2.1 Special variables

Special Variable: *whitespaces*
Package

str.

Source

str.lisp.


5.2.2 Ordinary functions

Function: prefix-1 (item1 item2)
Package

str.

Source

str.lisp.

Function: suffix-1 (item1 item2)
Package

str.

Source

str.lisp.


Appendix A Indexes


A.1 Concepts


A.2 Functions

Jump to:   A   B   C   D   E   F   H   I   J   L   M   N   P   R   S   T   U   V   W  
Index Entry  Section

A
add-prefix: Public ordinary functions
add-suffix: Public ordinary functions
alpha?: Public ordinary functions
alphanum?: Public ordinary functions
alphanump: Public ordinary functions
alphap: Public ordinary functions
ascii-char-p: Public ordinary functions
ascii-p: Public ordinary functions

B
blank?: Public ordinary functions
blankp: Public ordinary functions

C
capitalize: Public ordinary functions
collapse-whitespaces: Public ordinary functions
common-prefix: Public ordinary functions
concat: Public ordinary functions
contains?: Public ordinary functions
containsp: Public ordinary functions
count-substring: Public ordinary functions

D
digit?: Public ordinary functions
digitp: Public ordinary functions
downcase: Public ordinary functions
downcase?: Public ordinary functions
downcasep: Public ordinary functions

E
empty?: Public ordinary functions
emptyp: Public ordinary functions
ends-with-p: Public ordinary functions
ends-with?: Public ordinary functions

F
fit: Public ordinary functions
from-file: Public ordinary functions
Function, add-prefix: Public ordinary functions
Function, add-suffix: Public ordinary functions
Function, alpha?: Public ordinary functions
Function, alphanum?: Public ordinary functions
Function, alphanump: Public ordinary functions
Function, alphap: Public ordinary functions
Function, ascii-char-p: Public ordinary functions
Function, ascii-p: Public ordinary functions
Function, blank?: Public ordinary functions
Function, blankp: Public ordinary functions
Function, capitalize: Public ordinary functions
Function, collapse-whitespaces: Public ordinary functions
Function, common-prefix: Public ordinary functions
Function, concat: Public ordinary functions
Function, contains?: Public ordinary functions
Function, containsp: Public ordinary functions
Function, count-substring: Public ordinary functions
Function, digit?: Public ordinary functions
Function, digitp: Public ordinary functions
Function, downcase: Public ordinary functions
Function, downcase?: Public ordinary functions
Function, downcasep: Public ordinary functions
Function, empty?: Public ordinary functions
Function, emptyp: Public ordinary functions
Function, ends-with-p: Public ordinary functions
Function, ends-with?: Public ordinary functions
Function, fit: Public ordinary functions
Function, from-file: Public ordinary functions
Function, has-alpha-p: Public ordinary functions
Function, has-alphanum-p: Public ordinary functions
Function, has-letters-p: Public ordinary functions
Function, insert: Public ordinary functions
Function, join: Public ordinary functions
Function, letters?: Public ordinary functions
Function, lettersnump: Public ordinary functions
Function, lettersp: Public ordinary functions
Function, lines: Public ordinary functions
Function, non-blank-string-p: Public ordinary functions
Function, non-empty-string-p: Public ordinary functions
Function, numeric?: Public ordinary functions
Function, numericp: Public ordinary functions
Function, pad: Public ordinary functions
Function, pad-center: Public ordinary functions
Function, pad-left: Public ordinary functions
Function, pad-right: Public ordinary functions
Function, prefix: Public ordinary functions
Function, prefix-1: Private ordinary functions
Function, prefix?: Public ordinary functions
Function, prefixp: Public ordinary functions
Function, prune: Public ordinary functions
Function, remove-punctuation: Public ordinary functions
Function, repeat: Public ordinary functions
Function, replace-all: Public ordinary functions
Function, replace-first: Public ordinary functions
Function, replace-using: Public ordinary functions
Function, rsplit: Public ordinary functions
Function, s-assoc-value: Public ordinary functions
Function, s-first: Public ordinary functions
Function, s-last: Public ordinary functions
Function, s-member: Public ordinary functions
Function, s-nth: Public ordinary functions
Function, s-rest: Public ordinary functions
Function, shorten: Public ordinary functions
Function, split: Public ordinary functions
Function, split-omit-nulls: Public ordinary functions
Function, starts-with-p: Public ordinary functions
Function, starts-with?: Public ordinary functions
Function, substring: Public ordinary functions
Function, suffix: Public ordinary functions
Function, suffix-1: Private ordinary functions
Function, suffix?: Public ordinary functions
Function, suffixp: Public ordinary functions
Function, to-file: Public ordinary functions
Function, trim: Public ordinary functions
Function, trim-left: Public ordinary functions
Function, trim-right: Public ordinary functions
Function, unlines: Public ordinary functions
Function, unwords: Public ordinary functions
Function, upcase: Public ordinary functions
Function, upcase?: Public ordinary functions
Function, upcasep: Public ordinary functions
Function, version: Public ordinary functions
Function, words: Public ordinary functions

H
has-alpha-p: Public ordinary functions
has-alphanum-p: Public ordinary functions
has-letters-p: Public ordinary functions

I
insert: Public ordinary functions

J
join: Public ordinary functions

L
letters?: Public ordinary functions
lettersnump: Public ordinary functions
lettersp: Public ordinary functions
lines: Public ordinary functions

M
Macro, string-case: Public macros

N
non-blank-string-p: Public ordinary functions
non-empty-string-p: Public ordinary functions
numeric?: Public ordinary functions
numericp: Public ordinary functions

P
pad: Public ordinary functions
pad-center: Public ordinary functions
pad-left: Public ordinary functions
pad-right: Public ordinary functions
prefix: Public ordinary functions
prefix-1: Private ordinary functions
prefix?: Public ordinary functions
prefixp: Public ordinary functions
prune: Public ordinary functions

R
remove-punctuation: Public ordinary functions
repeat: Public ordinary functions
replace-all: Public ordinary functions
replace-first: Public ordinary functions
replace-using: Public ordinary functions
rsplit: Public ordinary functions

S
s-assoc-value: Public ordinary functions
s-first: Public ordinary functions
s-last: Public ordinary functions
s-member: Public ordinary functions
s-nth: Public ordinary functions
s-rest: Public ordinary functions
shorten: Public ordinary functions
split: Public ordinary functions
split-omit-nulls: Public ordinary functions
starts-with-p: Public ordinary functions
starts-with?: Public ordinary functions
string-case: Public macros
substring: Public ordinary functions
suffix: Public ordinary functions
suffix-1: Private ordinary functions
suffix?: Public ordinary functions
suffixp: Public ordinary functions

T
to-file: Public ordinary functions
trim: Public ordinary functions
trim-left: Public ordinary functions
trim-right: Public ordinary functions

U
unlines: Public ordinary functions
unwords: Public ordinary functions
upcase: Public ordinary functions
upcase?: Public ordinary functions
upcasep: Public ordinary functions

V
version: Public ordinary functions

W
words: Public ordinary functions