Highlights

First proper release in three years. The parser is rewritten on top of Scala parser-combinators, the language has a real Scala 3.8.3 cross-build, and the renderer covers the any-data shape (Map / List / scalar) end-to-end. 316 / 316 tests green across JVM, Scala.js, and Scala Native.

What changed since v0.1.14

Parser

• Tag parser rewritten on parser-combinators. Cleaner precedence, better error reporting, and the original recursive-descent quirks are gone. Long history of intermediate "rewrite tag parser" commits collapsed into a stable result.
• Comment syntax: {{ // a comment }} (one-line, swallows to the closing }}).

Language features

• {{ define name }} ... {{ end }} / {{ block name expr }} — define/use named blocks. Used by juicer's two-pass baseof / file / folder rendering.
• {{ for x <- xs }} ... {{ end }} — list iteration; {{ for k, v <- m }} ... {{ end }} for maps.
• {{ if cond }} ... {{ elif ... }} ... {{ else }} ... {{ end }} — full conditional.
• {{ with expr }} ... {{ end }} — bind a sub-context.
• {{ match expr }} {{ case a }} ... {{ case b }} ... {{ end }} — pattern match.
• {{ x := expr }} — local variable assignment.
• {{ partial 'name' . }} — pluggable partials via a TemplateLoader.
• and, or, not — logical operators.
• {{ x | filter ... }} — pipe syntax for any 1+ arity function.

Renderer

• Recursive any-data render path. Lists nest, maps print as field-value pairs, scalars do the right thing. The earlier renderer flattened in places it shouldn't.
• Per-page global context alongside data — partials and sub-contexts can read top-level page data without explicit threading.
• Hardcoded HTML-escaping in a few places where it was wrong; configurable via the renderer's data callbacks where it makes sense.

Builtins

• URL helpers: relURL, absURL, urlEscape. Cross-platform — no java.nio.file.Paths.
• Markdown integration: markdownify renders a string through the markdown lib.
• Emoji: emojify substitutes :smile: → 😄 via the emoji lib.
• Strings: upper, lower, trim, replace, split, join, startsWith, endsWith, contains, indexOf, substring, reverse, length, isEmpty, nonEmpty.
• Lists: head, tail, first, last, append, prepend, compact, distinct, reverse, sort, length, isEmpty, nonEmpty.
• Maths: abs, plus the usual arithmetic via operators in expressions.
• Date/time: built on java.time.
• Regex: matchRE, findRE (with capture groups in 0.2.3), findAllRE, replaceRE, splitRE.
• Files: fileExists.
• Debug: context, type for inspecting the data shape inline.

Build / cross-platform

• Scala 3.8.3 cross-build (was 2.13).
• Cross-published on JVM, Scala.js, Scala Native. Test data migrated from YAML literals to JSON so the JS / Native builds don't pull in scala-yaml.
• All compiler warnings eliminated (3.4 migration sweep).
• Main.scala routes args through cross_platform.processArgs so the CLI works the same on every backend.
• Dependency baseline: char_reader 0.1.27, cross_platform 0.1.6.

Bug fixes (since 0.2.x began)

• 0.2.3 — findRE no longer drops capture groups; recursive any-data renderer no longer flattens nested structures.
• 0.2.2 — version refs in Main.scala and the README synced.
• Two bugs surfaced by an end-to-end coverage pass landed in 0.2.1.

Compatibility

• Scala 3.8.3, sbt 1.12.x.
• Cross-built on JVM, Scala.js, and Scala Native.
• 316 / 316 tests green across all three platforms.

Used by

• juicer (the static site generator powering juicer.run) — squiggly is its template engine.

Full changelog: v0.1.14...v0.2.3

• fix tail recursion for token()

• added support for looping over maps
• added string and sequence concatenation operator
• added several more built-in functions

• add 'format' function for date formatting
• minor fixes

• added a few more functions
• made a number of changes to support site generation

• fixes empty YAML document edge case

• fix timestamp handling on native platform
• fix index and dot notation operations

• use back-ticks instead for non-strict expressions
• fix 'for' syntax to resemble Scala a bit more

• added match/case
• added define and block

• corrected Parser/Renderer API's