5.6.1-504

We're happy to announce the release of merlin v5.6.1-504!

This latest release brings performance optimizations, refined editor behavior, and improved stability to your OCaml development environment.

Key Improvements

• Smarter Signature Help: Now triggers correctly on unfinished let ... in bindings and no longer appears redundantly on function names.
• More Reliable Completion: Fixed issues with completion for inlined record labels.
• Improved Performance: Optimized buffer indexing and path calculations to ensure Merlin remains fast and responsive during heavy editing.
• Bug Fixes:
  • Resolved a bug where the document command concatenated labels and variants incorrectly.
  • Fixed various minor issues in the underlying C code and added regression tests to prevent previous crashes from returning.

See full changelog

• merlin binary
  • Fix a plethora of minor issues with the C code (#1998)
• merlin library
  • Signature help should not appear on the function name (#1997)
  • Fix completion not working for inlined records labels (#1978, fixes #1977)
  • Perform buffer indexing only if the query requires it (#1990 and #1991)
  • Stop unnecessarily forcing substitutions when initializing short-paths graph (#1988)
  • Fix Mocaml.with_printer didn't update replacement_printer_doc (#2010)
  • test suite
  • Add a test to ensure the behavior showed in issue #1517 is no longer relevant (#1995)
  • Add a test to ensure the code fragment exhibited in issue #1118 no longer makes Merlin crash (#1996)
  • Add a test case illustrating how a snippet produces two unrelated errors in issue #2000. (#2003)
  • Add a test reproducing issue #1983 where document command which sometime concatenates consecutive variants and labels (#2005)
  • Signature-help should trigger on unfinished let ... in bindings (#2009)