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feat(input): add meta-prefix-keys for flexible Meta input #2078

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Merged
cxxxr merged 2 commits into from
Jan 7, 2026
Merged

feat(input): add meta-prefix-keys for flexible Meta input #2078

cxxxr merged 2 commits into from
Jan 7, 2026

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@cxxxr cxxxr commented Jan 7, 2026 •
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Summary

  • Add meta-prefix-keys editor variable to treat keys as Meta prefix without timeout
  • When enabled, pressing a prefix key followed by another key produces Meta+key immediately
  • Pressing the same prefix key twice produces the prefix key itself
  • Implemented in core layer, works across all frontends

Supported configurations

;; Use Escape as Meta prefix (simplest)
(setf (lem:variable-value 'lem:meta-prefix-keys :global) t)

;; Use a specific key as Meta prefix
(setf (lem:variable-value 'lem:meta-prefix-keys :global)
      (lem:make-key :ctrl t :sym ";"))

;; Use multiple keys as Meta prefix
(setf (lem:variable-value 'lem:meta-prefix-keys :global)
      (list (lem:make-key :sym "Escape")
            (lem:make-key :ctrl t :sym ";")))

Behavior

Input Output
Escape x M-x
Escape Escape Escape
Escape C-c M-C-c

Test plan

  • Unit tests for keys-equal-p, meta-prefix-key-p, add-meta-modifier, maybe-convert-to-meta
  • Test: t (Escape) as prefix
  • Test: Custom key as prefix
  • Test: Multiple prefix keys
  • Test: Double-press produces the prefix key itself
  • Test: Non-prefix keys pass through unchanged
  • All 12 tests passing

🤖 Generated with Claude Code

@cxxxr @claude
feat(input): add escape-as-meta-prefix for timeout-free Meta input
0ebe21e 
Add `escape-as-meta-prefix` editor variable that treats Escape key as
Meta prefix without timeout delay. When enabled:
- Escape followed by any key produces Meta+key (e.g., Esc x → M-x)
- Escape Escape produces a single Escape (for quit)

This provides an alternative to the existing ncurses timeout-based
escape handling, allowing users who prefer immediate key processing.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
@lem-project lem-project deleted a comment from code-contractor-app bot Jan 7, 2026
@cxxxr @claude
feat(input): rename to meta-prefix-keys with flexible key support
cb3ea01 
Rename `escape-as-meta-prefix` to `meta-prefix-keys` and extend to
support arbitrary keys as Meta prefix:

- nil: disabled
- t: use Escape as Meta prefix (convenient shorthand)
- a key object: use that specific key as Meta prefix
- a list of keys: use any of those keys as Meta prefix

This allows users to configure custom Meta prefix keys, such as
using both Escape and other keys for Meta input.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
@cxxxr cxxxr changed the title feat(input): add escape-as-meta-prefix for timeout-free Meta input feat(input): add meta-prefix-keys for flexible Meta input Jan 7, 2026
@cxxxr cxxxr merged commit b204f8e into main Jan 7, 2026
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@cxxxr