Beta1 release for v0.11.0

See the NEWS file for more details.

lnav v0.10.1

Features:

• Added ":show-only-this-file" command that hides all files except the
  one for the top line in the view.
• The ":write-raw-to" command now accepts a --view flag that specifies
  the source view for the data to write. For example, to write the
  results of a SQL query, you would pass "--view=db" to the command.
• The commands used to access the clipboard are now configured through
  the "tuning" section of the configuration.
• Added an "lnav_version()" SQL function that returns the current
  version string.
• Added basic support for the logfmt file format. Currently, only files
  whose lines are entirely logfmt-encoded are supported. The lines
  must also contain either a field named "time" or "ts" that contains
  the timestamp.
• Added the "logfmt2json()" SQL function to convert a string containing
  a logfmt-encoded message into a JSON object that can be operated on
  more easily.
• Added the "gzip()" and "gunzip()" SQL functions to compress values
  into a blob and decompress a blob into a string.
  Interface changes:
• The xclip implementation for accessing the system clipboard now writes
  to the "clipboard" selection instead of the "primary" selection.
• The 'query' bookmark type and y/Y hotkeys have been removed due to
  performance issues and the functionality is probably rarely used.

Bug Fixes:

• The text "send-input" would show up on some terminals instead of
  ignoring the escape sequence. This control sequence was only
  intended to be used in the test suite.
• Remote file synchronization has been optimized a bit.
• Configuration values loaded from the ~/.lnav/configs directory
  are now included in the default configuration, so they won't be
  saved into the ~/.lnav/config.json user configuration file.
• Key handling in the visual filter editor will no longer swallow
  certain key-presses when editing a filter.
• Scrolling performance restored in the SQL view.
• The ':redirect-to' command now works with '/dev/clipboard'
• The field overlay (opened by pressing 'p') now shows 'log_time'
  for the timestamp field instead of the name defined in the format.
• The search term in the bottom status bar will now update properly
  when switching views.
• The "Out-Of-Time-Order Message" overlay will be shown again.
• The tab for the "Files" panel will be highlighted in red if there
  is an issue opening a file.
• Overwritten files should be reloaded again.
• The "jget()" SQL function now returns numbers with the correct type.
• The "json_contains()" SQL function now returns false if the first
  argument is NULL instead of NULL.
• The local copies of remote files are now cleaned up after a couple
  days of the host not being accessed.
• The initial loading and indexing phase has been optimized.

lnav v0.10.1-beta1

Beta release for v0.10.1 that fixes a few regressions and other issues in the v0.10.0 release.

lnav v0.10.0

Features:

• Files on remote machines can be viewed/tailed if they are accessible
  via SSH. The syntax for specifying the host and path is similar to
  scp. For example, to view the files in the /var/log directory on the
  machine "host1.example.org":
  user@host1.example.org:/var/log
  Note that you must be able to log into the machine without any
  interaction.
• Added the ':filter-expr' command to filter log messages based on an SQL
  expression. This command allows much greater control over filtering.
• Added the ':mark-expr' command to mark log messages based on an SQL
  expression. This command makes it easier to programmatically mark
  log messages compared to using SQL.
• Added support for archive files, like zip, and other compression formats,
  like xz, when compiled with libarchive. When one of these types of
  files is detected, they are unpacked into a temporary directory and
  all of the files are loaded into lnav.
• Added an 'xpath()' table-valued function for extracting values from
  strings containing XML snippets.
• Added the ':prompt' command to allow for more customization of prompts.
  Combined with a custom keymapping, you can now open a prompt and prefill
  it with a given value. For example, a key could be bound to the
  following command to open the command prompt with ":filter-in " already
  filled in:
  :prompt command : 'filter-in '
• Added support for the W3C Extended Log File Format with the name
  "w3c_log". Similarly to the bro log format, the header is used to
  determine the columns in a particular file. However, since the columns
  can be different between files, the SQL table only has a well-known set
  of columns and the remainder are accessible through JSON-objects stored
  in columns like "cs_headers" and "sc_headers".
• Added support for the S3 Access File Format.
• To jump to the first search hit above the top line in a view, you can
  press CTRL+J instead of ENTER in the search prompt. Pressing ENTER
  will jump to the first hit below the current window.
• Filtering, as a whole, can be now disabled/enabled without affecting
  the state of individual filters. This includes text and time-filters
  (i.e. :hide-lines-before). You can enable/disable filtering by:
  pressing 'f' in the filter editor UI; executing the ':toggle-filtering'
  command; or by doing an UPDATE on the "filtering" column of the
  "lnav_views" SQLite table.
• Themes can now include definitions for text highlights under:
  /ui/theme-defs/<theme_name>/highlights
• Added a "grayscale" theme that isn't so colorful.
• Added the humanize_file_size() SQL function that converts a numeric size
  to a human-friendly string.
• Added the sparkline() SQL function that returns a "sparkline" bar made
  out of unicode characters. It can be used with a single value or as
  an aggregator.
• Added a "log_time_msecs" hidden column to the log tables that returns
  the timestamp as the number of milliseconds from the epoch.
• Added an "lnav_top_file()" SQL function that can be used to get the
  name of the top line in the top view or NULL if the line did not come
  from a file.
• Added a "mimetype" column to the lnav_file table that returns a guess as
  to the MIME type of the file contents.
• Added a "content" hidden column to the lnav_file table that can be used
  to read the contents of the file. The contents can then be passed to
  functions that operate on XML/JSON data, like xpath() or json_tree().
• Added an "lnav_top_view" SQL VIEW that returns the row for the top view
  in the lnav_views table.
• The "generate_series()" SQLite extension is now included by default.
  One change from the standard implementation is that both the start and
  stop are required parameters.
• Added the ";.read" SQL command for executing a plain SQL file.
• Added the "-N" flag so that lnav will run without opening the default
  syslog file.

Interface Changes:

• When copying log lines, the file name and time offset will be included
  in the copy if they are enabled.
• Log messages that cannot be parsed properly will be given an "invalid"
  log level and the invalid portions colored yellow.
• The range_start and range_stop values of the regexp_capture() results
  now start at 1 instead of zero to match with what the other SQL string
  functions expect.
• The ":write-cols-to" command has been renamed to ":write-table-to".
• The DB view will limit the maximum column width to 120 characters.
• The ":echo" command now evaluates its message to do variable
  substitution.
• The ":write-raw-to" command has been changed to write the original
  log file content of marked lines. For example, when viewing a JSON
  log, the JSON-Line values from the log file will be written to the
  output file. The ":write-view-to" command has been added to perform
  the previous work of ":write-raw-to" where the raw content of the view
  is written to the file.

Fixes:

• Unicode text can now be entered in prompts.
• The replicate() SQL function would cause a crash if the number of
  replications was zero.
• Many internal improvements.

lnav v0.10.0 Beta1

A beta release of lnav that leads up to the final v0.10.0 release.

The "musl" build is a statically linked 64-bit linux binary.

lnav v0.9.0

Features

• Added support for themes and included a few as well: default, eldar,
  monocai, night-owl, solarized-light, and solarized-dark. The theme
  can be changed using the ':config' command, like so:
  :config /ui/theme night-owl
  Consult the online documentation for defining a new theme at:
  https://lnav.readthedocs.io/en/latest/config.html#theme-definitions
• Added support for custom keymaps and included the following: de, fr,
  uk, us. The keymap can be changed using the ':config' command, like so:
  :config /ui/keymap uk
  Consult the online documentation for defining a new keymap at:
  https://lnav.readthedocs.io/en/latest/config.html#keymap-definitions
• The following JSON-Schemas have been published for the log format and
  configuration JSON files:
  https://lnav.org/schemas/format-v1.schema.json
  https://lnav.org/schemas/config-v1.schema.json
  Formats should be updated to reference the schema using the "$schema"
  property.
• Indexing of new data in log files can now be paused by pressing '='
  and unpaused by pressing it again. The bottom status bar will display
  'Paused' in the right corner while paused.
• CMake is now a supported way to build.
• When viewing data from the standard-input, a symbolic name can be used
  to preserve session state. The name can be changed using the
  "rename-stdin" lnav script or by doing an UPDATE to the filepath
  column of the lnav_file table. For example, to assign the name
  "journald", the following SQL statement can be executed in lnav:
  ;UPDATE lnav_file SET filepath='journald' WHERE filepath='stdin'
• The size of the terminal can be accessed in SQL using the $LINES and
  $COLS variables.
• The raise_error(msg) SQL function has been added to make it easier to
  raise an error in an lnav script to stop execution and notify the user.
• Added the json_concat() function to make it easier to append/concatenate
  values onto arrays.
• Added the ":write-jsonlines-to" command that writes the result of a SQL
  query to a file in the JSON Lines format.

Interface Changes

• Data piped into lnav is no longer dumped to the console after exit.
  Instead a file containing the data is left in .lnav/stdin-captures/
  and a message is printed to the console indicating the file name.
• In time-offset mode, the deltas for messages before the first mark
  are now negative instead of relative to the start of the log.
• The $XDG_CONFIG_HOME environment variable (or ~/.config directory) are
  now respected for storing lnav's configuration. If you have an existing
  ~/.lnav directory, that will continue to be used until you move it to
  $XDG_CONFIG_HOME/lnav or ~/.config/lnav.
• Removed the ':save-config' command. Changes to the configuration are now
  immediately saved.

Fixes

• Added 'notice' log level.
• If a "timestamp-format" is used in an element of a "line-format", the
  field name is ignored and a formatted timestamp is always used.
• Ignore stdin when it is connected to /dev/null.

Release Artifacts

• lnav-0.9.0-musl-64bit.zip: Contains a fully statically linked version of lnav for Linux.
• lnav-0.9.0-linux-64bit.zip: A "mostly" statically linked zip that contains an lnav binary for Linux. Requires a recent version of glibc.
• lnav_0.9.0_amd64.deb, lnav-0.9.0-1.x86_64.rpm: 64-bit binary packages for Debian and RPM that contain the above binary.
• lnav-0.9.0a-os-x.zip: A statically linked version of lnav for MacOS. (The 'a' version fixes an issue with some libraries not being statically linked)
• lnav-0.9.0-freebsd-64bit.zip: A build for FreeBSD
• lnav-0.9.0.tar.gz, lnav-0.9.0.tar.bz2: Source packages.

v0.9.0-rc1

Release candidate 1 for v0.9.0

See the https://github.com/tstack/lnav/blob/v0.9.0-rc1/NEWS file for more information.

lnav v0.8.5

Features:

• Added a visual filter editor to make it easier to update existing
  filters. The editor can be opened by pressing TAB. Once the editor
  is opened, you can create/delete, enable/disable, and edit the patterns
  with hotkeys.
• Added an 'lnav_view_filters' SQL table that can be used to
  programmatically manipulate filters.
• Added an 'lnav_view_filter_stats' SQL table that contains the number of
  times a given filter matched a line in the view.
• Added a 'log_filters' column to log tables that can be used to see what
  filters matched the log message.
• A history of locations in a view is now kept so that you can jump back
  to where you were previously using the '{' and '}' keys. The location
  history can also be accessed through the ":prev-location" and
  ":next-location" commands.
• The ":write-*" commands will now accept "/dev/clipboard" as a file name
  that writes to the system clipboard.
• The ":write-to" and ":write-raw-to" commands will now print out comments
  and tags attached to the lines.
• Added a ":redirect-to " command to redirect command output to the
  given file. This command is mostly useful in scripts where one might
  want to redirect all output from commands like ":echo" and ":write-to -"
  to a single file.
• If a log file format has multiple patterns for matching log messages,
  each pattern is now tried to match a message in a file. Previously,
  only one pattern was ever used for an entire file.
• Added haproxy log format from Peter Hoffmann.
• Added 'spooky_hash()' and 'group_spooky_hash()' SQL functions to
  generate a hash of their parameters.
• Added 'time_offset' to the 'lnav_file' table so that the timestamps in
  a file can be adjusted programmatically.

Interface Changes:

• The auto-complete behavior in the prompt has been modified to fall back
  to a fuzzy search if the prefix search finds no matches. For example,
  typing in ":fin" and pressing TAB would previously not do anything.
  Now, the ":fin" will be completed to ":filter-in " since that is a
  strong fuzzy match. If there are multiple matches, as would happen
  with ":dfil", readline's menu-complete behavior will be engaged and
  you can press TAB cycle through the options.
• Added CTRL+F to toggle the enabled/disabled state of all filters for the
  current view.
• The '-r' flag is now for recursively loading files. The functionality
  for loading rotated files is now under the '-R' flag.
• The current search term is now shown in the bottom status bar.
• Some initial help text is now shown for the search and SQL prompts to
  refresh the memory.
• When entering the ":comment" command for a line with a comment, the
  command prompt will be filled in with the existing comment to make
  editing easier.
• Hidden fields now show up as a unicode vertical ellipsis (⋮) instead of
  three-dot ellipsis to save space.
• Pressing 7/8 will now move to the previous/next minute.
• The ":write-raw-to" command has been changed to write the entire
  contents of the current view and a ":write-screen-to" command has been
  added to write only the current screen contents.
• Disabled filters are now saved in sessions.
• The ":adjust-log-time" command now accepts relative times as input.

Fixes:

• The ":write-json-to" command will now pass through JSON cells as their
  JSON values instead of a JSON-encoded string.

v0.8.5 Release Candidate 1

Features:

• Added a visual filter editor to make it easier to update existing
  filters. The editor can be opened by pressing TAB. Once the editor
  is opened, you can create/delete, enable/disable, and edit the patterns
  with hotkeys.
• Added an 'lnav_view_filters' SQL table that can be used to
  programmatically manipulate filters.
• Added an 'lnav_view_filter_stats' SQL table that contains the number of
  times a given filter matched a line in the view.
• Added a 'log_filters' column to log tables that can be used to see what
  filters matched the log message.
• A history of locations in a view is now kept so that you can jump back
  to where you were previously using the '{' and '}' keys. The location
  history can also be accessed through the ":prev-location" and
  ":next-location" commands.
• The ":write-*" commands will now accept "/dev/clipboard" as a file name
  that writes to the system clipboard.
• The ":write-to" and ":write-raw-to" commands will now print out comments
  and tags attached to the lines.
• Added a ":redirect-to " command to redirect command output to the
  given file. This command is mostly useful in scripts where one might
  want to redirect all output from commands like ":echo" and ":write-to -"
  to a single file.
• If a log file format has multiple patterns for matching log messages,
  each pattern is now tried to match a message in a file. Previously,
  only one pattern was ever used for an entire file.
• Added haproxy log format from Peter Hoffmann.
• Added 'spooky_hash()' and 'group_spooky_hash()' SQL functions to
  generate a hash of their parameters.
• Added 'time_offset' to the 'lnav_file' table so that the timestamps in
  a file can be adjusted programmatically.

Interface Changes:

• The auto-complete behavior in the prompt has been modified to fall back
  to a fuzzy search if the prefix search finds no matches. For example,
  typing in ":fin" and pressing TAB would previously not do anything.
  Now, the ":fin" will be completed to ":filter-in " since that is a
  strong fuzzy match. If there are multiple matches, as would happen
  with ":dfil", readline's menu-complete behavior will be engaged and
  you can press TAB cycle through the options.
• Added CTRL+F to toggle the enabled/disabled state of all filters for the
  current view.
• The '-r' flag is now for recursively loading files. The functionality
  for loading rotated files is now under the '-R' flag.
• The current search term is now shown in the bottom status bar.
• Some initial help text is now shown for the search and SQL prompts to
  refresh the memory.
• When entering the ":comment" command for a line with a comment, the
  command prompt will be filled in with the existing comment to make
  editing easier.
• Hidden fields now show up as a unicode vertical ellipsis (⋮) instead of
  three-dot ellipsis to save space.
• Pressing 7/8 will now move to the previous/next minute.
• The ":write-raw-to" command has been changed to write the entire
  contents of the current view and a ":write-screen-to" command has been
  added to write only the current screen contents.
• Disabled filters are now saved in sessions.
• The ":adjust-log-time" command now accepts relative times as input.

Fixes:

• The ":write-json-to" command will now pass through JSON cells as their
  JSON values instead of a JSON-encoded string.

lnav v0.8.4

Features:

• Added the ':comment' command that can be used to attach a comment to a
  log line. The comment will be displayed below the line, like so:
  2017-01-01T15:30:00 error: computer is on fire
  + This is where it all went wrong
  The ':clear-comment' command will remove the attached comment. Comments
  are searchable with the standard search mechanism and they are available
  in SQL through the "log_comment" column.
• Added the ':tag', ':untag', and ':delete-tags' commands that can be used
  to attach/detach tags on the top log line and delete all instances of
  a tag. Tags are also searchable and are available in SQL as a JSON
  array in the "log_tags" column.
• Pressing left-arrow while viewing log messages will reveal the source
  file name for each line and the unique parts of the source path.
  Pressing again will reveal the full path.
• The file name section of the top status line will show only the unique
  parts of the log file path if there is not enough room to show the full
  path.
• Added the ":hide-unmarked-lines" and ":show-unmarked-lines" commands
  that hide/show lines based on whether they are bookmarked.
• Added the "json_contains()" SQL function to check if a JSON value
  contains a number of a string.
• The relative time parser recognizes "next" at the beginning of the
  input, for example, "next hour" or "next day". Handy for use in the
  ":goto" command.
• Added a "text-transform" option for formatting JSON log messages. The
  supported options are: none, uppercase, lowercase, and capitalize.
• Added a special "level" field name for formatting JSON messages so
  that the lnav level name can be used instead of the internal value in
  the JSON object.
• Added a log format for journald JSON logs.

Interface Changes:

• When typing in a search, instead of moving the view to the first match
  that was found, the first ten matches will be displayed in the preview
  window.
• The pretty-print view maintains highlighting from the log view.
• The pretty-print view no longer tries to reverse lookup IP addresses.
• The online help for commands and SQL functions now includes a 'See Also'
  section that lists related commands/functions.

Fixes:

• The HOME key should now work in the command-prompt and move the cursor
  to the beginning of the line.
• The :delete-filter command should now tab-complete existing filters.
• Milliseconds can now be used in relative times (e.g. 10:00:00.123)
• The J/K hotkeys were not marking lines correctly when the bottom of
  the view was reached.
• The level field in JSON logs should now be recognized by the level
  patterns in the format.