2.4.1

Fixes

Both regressions below were introduced on 2026-06-20 and shipped in 2.4.0 (released 2026-08-06). Neither was an intentional public API change — this release restores prior correct behavior.

• Static template text no longer has its line endings silently rewritten. A fix for internal indentation handling started normalizing every \r\n/\r in static template text to \n, so a literal \r\n a caller wrote into a template string (e.g. between {{#each}} iterations) was silently turned into \n. Static text now round-trips verbatim, matching this library's long-standing behavior and handlebars.js. (#663, fixes #661)
• Subexpression results are plain strings again, not an internal wrapper type. A fix for double-encoding across subexpression boundaries (#543) wrapped every writer-based helper's captured output in an internal sealed class SafeString when used as a subexpression argument. Only a few internal call sites knew how to unwrap it — any other consumer, including reflection-based/typed helper binders in third-party packages (e.g. Handlebars.Net.Helpers), received an opaque type it could neither cast to string nor unwrap, throwing InvalidCastException. The double-encoding fix is preserved, but the signal is now carried by an invisible reference-keyed marker instead of a boxing type, so the value is a genuine System.String everywhere except the one place that needs to know. (#664, fixes #660)

Compatibility notes

• No API surface changes. Both fixes are behavior reverts to what 2.3.0 and earlier already did; anything that worked before 2.4.0 works the same way again.
• If your code adapted to either regression (e.g. expected \n-only output regardless of source line endings, or handled a SafeString-typed subexpression argument), that adaptation is no longer necessary but should remain harmless.

Contributors

@rexm

Full Changelog: 2.4.0...2.4.1