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feat: add opt-in trailing whitespace highlighting

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Valdemar Høgsvig Lorenzen
2026-10-13 22:42:30 +02:00
parent b58fb085a3
commit e2f33519d1
8 changed files with 179 additions and 4 deletions
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docs/configuration.md
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@@ -16,6 +16,7 @@ Vamp.configure do |config|
config.git_blame = true # false disables current-line attribution
config.git_gutter = "bar" # or "symbols", "line_numbers", "none"
config.scroll_distance = 0 # nonnegative edge distance, or nil to center
config.highlight_trailing_whitespace = false # true marks line-end whitespace in red
config.file_explorer_side = "right"
config.file_explorer_view = "tree"
config.file_picker_view = "tree"
@@ -52,6 +53,8 @@ Plugin paths resolve relative to the config file, not the shell's working direct
The setting applies to ordinary and historical buffers, split/unified diff panes, file pickers and explorers, command/buffer palettes, completion lists, and revision selectors. Wrapped text measures visual rows, not source lines; picker distances use result rows, excluding borders, search fields, and help. Manual mouse-wheel scrolling remains detached until keyboard navigation resumes. Only `nil` or integers from `0` through the platform's Rust `usize` maximum (`18446744073709551615` on 64-bit systems) are accepted; other values reject the configuration.
`config.highlight_trailing_whitespace` defaults to `false`. Set it to `true` to give trailing whitespace a red background in ordinary and historical buffers and both sides of split/unified diffs, including wrapped and horizontally scrolled text. Spaces, expanded tab cells, and Unicode whitespace at the end of a source line are highlighted; whitespace-only lines are included, but empty lines and padding beyond the text are not. Wrapping does not make interior whitespace trailing. Search, selections, and secondary carets retain their background precedence; diagnostic underlines remain visible. This changes display only, not file contents. Only literal Ruby booleans are accepted; other values reject the configuration.
`config.git_blame` defaults to `true`; set it to `false` to disable current-line inline Git blame and its background worker. Only literal Ruby booleans are accepted; other values reject the configuration. Toggle it for the running session with `:git_blame.toggle`, its palette action, or a custom binding such as `config.bind "leader b", config.core.git_blame.toggle`. There is no default shortcut.
`config.git_gutter` defaults to `"bar"`: a fat `▌` with one blank column between the line number and marker and another before the text. `"symbols"` uses `+` / `-` / `~` with the same spacing. Added, removed, and modified lines use green, red, and yellow respectively. `"line_numbers"` colors the existing numbers without adding a marker column; the current line retains its cyan/bold caret highlight. `"none"` hides line-gutter repository indicators, not line numbers or picker file statuses. Other modes retain diagnostic number colors independently of repository markers. Unsupported strings, empty strings, and non-string values reject the configuration.