lnav v0.13.0 is available!

[lnav support]

The latest version of lnav is available here:

  https://github.com/tstack/lnav/releases/tag/v0.13.0

There are some non-trivial changes in this release, which is why

I let it bake so long.  Hopefully, I haven't messed things up too

much for folks.

Here's a list of the various changes:

Interface changes:

* The prompt is now a custom implementation instead of readline.

  Some highlights:

  - In the DB prompt: pressing `CTRL+L` will reformat the query and

    switch the prompt to multi-line mode; error locations will be

    highlighted.

  - In multi-line mode, you can click and drag the status bar above

    the prompt to resize the prompt.

  - Pressing `CTRL+O` in the prompt will transfer the prompt to

    contents to Visual Studio Code or the default text editor on

    macOS.

    You can then edit the file and run it from the `|` prompt with:

    ```lnav

    |saved-prompt

    ```

  - When editing a regular expression, like the search prompt or

    for a filter, if the current pattern matches a line in the

    view, the following word will be suggested.

    For example, if the view has the text "foo bar baz" and you

    type "foo ", the prompt will suggest "bar" and you can then

    press `TAB` to complete.

  - In the history listing, an icon indicates if the command or

    query succeeded or failed.

  - Mouse input works as expected: left-click positions the cursor

    in a given location, and a click-drag will select text.

    A right-click will copy the selected text to the system

    clipboard.

* Pressing `F1` in the prompt will show the help text for the

  prompt itself.

  The size of the prompt panel is expanded for readability.

* When reading from stdin, the files used to store the content

  will be rotated when they cross the `/tuning/piper/max-size`

  threshold.

  Previously, the name of the file in the TEXT view would just

  be "stdin", but now it includes the rotation number.

* The LOG and TEXT views will now display a message if they

  contain no content to make it clear to the user that they

  need to switch views or `:open` a file.

* The HIST view now supports bookmarks, so you can use the usual

  hotkeys to move to the next/previous time segment with

  errors/warnings/marks.

* In table cells, control characters are replaced with Unicode

  symbols and highlighted with the 'hidden' style from the theme.

* The `Shift` + `B` hotkey will now jump to the start of a log

  message in the LOG view if the currently focused line is in the

  middle of a multi-line log message.

* When the `:hide-unmarked-lines` command is used in the LOG

  view, if any line in a message is marked, the entire message

  will be shown.

Features:

* The `:comment` command will now switch the prompt to multi-line

  mode and does syntax highlighting for Markdown directives in the

  comment.

  The rendered Markdown will also now be shown in the preview panel.

* lnav code blocks in Markdown content now have a play button (▶)

  next to commands that you can click on to run the command.

* Scrolling right in the LOG view when at the start of a message

  can hide the timestamp/level fields in the message and insert a

  shorter timestamp column on the left side.

  The column should take less space than the existing field and

  aligns all timestamps across all log formats.

  This feature is gated by the `/ui/views/log/time-column`

  setting, with the following values:

  - `disabled`: scrolling right works as normal and does not insert

    the time column.

  - `enabled`: scrolling right enables the time column.

  - `default`: the time column is enabled and the default on startup.

* Added a `fuzzy_match()` SQL function that compares a pattern to

  a string and returns a score.

  The algorithm used is the same as in lnav itself.

* Added a `match_rowid` column to search tables to make it easier

  to join multiple search tables together.

  For example, when multiple log messages occur together in the

  same sequence.

  You can create search tables for each line and then join them

  to query over the whole group of messages.

* Added a `:write-debug-log-to` command that can be used to write

  lnav's internal debug log to a file.

* Added a `:clear-adjusted-log-time` command to clear the time offset

  set by the `:adjust-log-time` command.

* Added a `measure_with_units` SQLite collation function that can

  compare numbers with unit suffixes, like "10KB" or "1.2ms".

  The `:create-search-table` command will also use this collation

  function for capture patterns that are likely to capture a number

  with a unit.

* Log messages now have permalinks that can be used to reference them

  from other locations.

  The permalink for a message is shown in the parser details overlay

  (activated by pressing `p`).

  Selecting the "Permalink:" line in the overlay and then pressing

  `c` will copy the link to your clipboard.

  The link is also available in the `log_line_link` column of the

  log tables.

  These permalinks can be used with the `:goto` command to move to

  the log message.

  They can also be used in log message comments as targets for

  Markdown links, which can be clicked to jump to the message.

* The `CTRL` + `O` shortcut is now bound to the `:prev-location`

  command, so you can jump back to a previous location.

* Render task marks in markdown.

* The demultiplexing feature has been extended to support JSON-lines

  input files.

  For example, an

  [export of search results from Graylog](https://go2docs.graylog.org/current/interacting_with_your_log_data/export_search_results.html)

  can automatically be split into separate streams based on the

  `source` property.

* Added an `lnav_focused_msg` SQL VIEW that returns a single row

  with the columns from the `all_logs` table for the currently

  focused log message.  An `UPDATE` of the mutable columns will

  update the corresponding row in the `all_logs` table.

* Add timestamp format `%9` for nanoseconds from the epoch.

* Added the "modus-operandi" light-colored theme.

* The colors used for highlights and identifiers are now checked

  for high contrast against the current theme's background color.

* Added the "pino_log" format for the Pino Node.js logger.

* Added the "zap_console_log" format for the Go Zap logger.

* Added the "spdlog_log" format for the C++ spdlog logger.

Bug Fixes:

* Should start up in tmux and line drawing should show up now as well.

* The default terminal colors will now be used in the default theme.

  So, a light background with a dark foreground will be respected.

* Improved performance of searches with lots of hits.

* Improved performance for compressed files.

* Improved performance for the timeline view.

* Copying a column with a text value in the DB overlay view.

* Generic logs read from stdin or exec'd were not working properly.

* The `:export-session-to` command will now include `:open` commands

  for log files that were piped in to lnav or executed with the `:sh`

  command.

* The `:set-file-timezone` command was not working correctly in some

  cases.

* The location of views should be restored from the session when filters

  are active.

* Themes have been cleaned up a bit to fix issues with contrast.

Thanks,

Tim