0.22 · match macro, optimizations, correctness

• 0.22, September, 2025:
  • optimized repeat further and fixed for LispWorks (no more using apply and its call argument limit), thanks to @Yehouda.
  • small backward uncompatible correctness changes, thanks to @swapneils:
    • join now treats a nil separator as the empty string, rather than the string "nil", conforming to the semantics in the README of not converting nil to "nil".
    • containsp now automatically returns nil if either string input is nil.
    • alphanump and similar now use the correct regex checks for multi-line strings, rather than accepting an input if it has any line matching their specification.
  • optimization changes, thanks to @swapneils:
    • multiple non-recursive functions have been inlined.
    • multiple functions have ftype declarations.
• April, 2025:
  • optimized repeat for large workloads. When the workload is
    sufficiently large, str:repeat allocates all chunks of the
    expected output onto the stack to call concat, causing an
    overflow. For workloads larger than 10,000 characters in the
    expected output, it now chunks the work to minimize the chance of
    overflowing the stack or heap, while retaining decent performance.
• Feb, 2024:
  • added the match macro. It is EXPERIMENTAL and might change in future versions. We welcome your bug reports and feedback.

0.21 · `regex`, `ensure`, `fit`…

from our changelog:

• 0.21, November, 2023:
  • added the regex key argument to split, rsplit, split-omit-nulls.
• August, 2023:
  • added the regex key argument to the replace-* functions.
• March, 2023:
  • added str:ensure, str:ensure-prefix, str:ensure-suffix, str:ensure-wrapped-in and str:wrapped-in-p.
• January, 2023: added the :char-barg parameter to trim, trim-left, trim-right.
  • minor: ends-with-p now works with a character.
• June, 2022: small breaking change: fixed prefixp 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 suffixp.
• 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

add s-member LIST, S

0.17 - april, 2020

• added the s-assoc-value function

• support characters for join (as does split)

• added collapse-whitespaces

• added replace-first

• fixed: remove-punctuation respects the case.

• 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) and to remove punctuation.

0.8

added the string-case macro.

0.2

• new: contains? and containsp.

released in september's quicklisp dist.