PersonalNotebook #docs #linefilter

A Sublime-style notebook built around Line Filter: grep-like, instant filtering of every line in the current document. Version v0.0.1. Click the version in the status bar to see what is new.

Quick start

• Open server.log. The filter bar is prefilled with ERROR|WARN (regex mode).
• Press Enter / Shift+Enter to jump to the next / previous result line.
• Switch Include to Exclude to drop the matching lines instead.
• Turn on Fold unmatched to collapse non-matching lines in the editor. Line numbers stay unchanged.
• Use the results panel to copy lines, export them to a new tab, or delete lines in place (Ctrl+Z undoes it).
• Try regex: ^\s+at finds stack traces, latency=\d{3,}ms finds slow requests.
• The EN / 中文 button in the status bar (or Alt+L) switches the interface language.

Open and save files

• Open (Ctrl+O, or drag files onto the window) loads text files into new tabs.
• Save (Ctrl+S) writes back to the original file when the browser allows it.
• Save As (Ctrl+Shift+S) writes the note to a new file and links the tab to it.
• A dot on a tab means the note has changes that are not saved to a file yet.
• There is no file size limit. Very large files (hundreds of MB) can feel slow because the whole file is held in memory.
• To save straight into the original file, open the standalone HTML file in Chrome or Edge.
• Inside the claude.ai viewer the browser cannot grant write access, so Save offers a downloaded copy instead.
• Notes are also kept in this browser automatically, so closing the page does not lose them.

Customize shortcuts

• Open Keyboard Shortcuts with Ctrl+, or the Shortcuts button in the status bar.
• Click + on a row, then press the new key combination. Esc cancels.
• An action can have several shortcuts. Click x on a shortcut to remove it, or Reset to restore the defaults.
• Reusing a shortcut moves it from the action that had it. Reset all restores every default.
• A shortcut needs Ctrl, Alt or Cmd (or an F key). Changes are saved in this browser.

Filter options

Include       keep matching lines
Exclude       drop matching lines
.*            regular expression mode
Aa            match case
Context       show N lines around each match (Include mode)
Fold          collapse non-matching lines in the editor

Default shortcuts

Ctrl+P            go to note
Ctrl+Shift+P      command palette
Ctrl+,            keyboard shortcuts
Ctrl+O            open file
Ctrl+S            save
Ctrl+Shift+S      save as
Ctrl+Shift+F      open the filter bar (Alt+F and Ctrl+F also work)
F3 / Shift+F3     next / previous filter result
Alt+R / Alt+C     regex / match case
Alt+L             switch language
Ctrl+D            select next occurrence
Ctrl+Shift+Up/Down  move line up / down
Ctrl+Shift+D      duplicate line
Ctrl+/            toggle comment
Ctrl+G            go to line (or type :120 in the palette)
Ctrl+B            toggle sidebar
Alt+N / Alt+W     new / close tab

Architecture

UI shell        sidebar, tabs, filter bar, results panel, status bar
Editor core     CodeMirror 5, one Doc per tab
Actions         one registry of commands and shortcuts, shared by keys and the palette
Filter engine   filterLines(texts, filter) -> kinds[] (pure function)
Decorations     line highlight, fold, minimap, results list
File I/O        File System Access API, file input, downloads capability
Storage         localStorage (notes, shortcuts and preferences)