Howzit is a tool that allows you to keep Markdown-formatted notes about a project’s tools and procedures. It functions as an easy lookup for notes about a particular task, as well as a task runner to automatically execute appropriate commands.
A command-line reference tool for tracking project build systems
Howzit is a tool that allows you to keep Markdown-formatted notes about a project’s tools and procedures. It functions as an easy lookup for notes about a particular task, as well as a task runner to automatically execute appropriate commands.
Features
Match topic titles with any portion of title
Automatic pagination of output, with optional Markdown highlighting
Use @run(), @copy(), and @open() to perform actions within a build notes file
Use @include() to import another topic’s tasks
Use fenced code blocks to include/run embedded scripts
Scripts can communicate back to Howzit, sending log messages and setting variables
Conditional blocks (@if/@unless/@elsif/@else) for conditionally including content and tasks
String comparison operators including fuzzy match (**=) for flexible pattern matching
File contents conditions to check file contents in conditional blocks
Sets iTerm 2 marks on topic titles for navigation when paging is disabled
Inside of git repositories, howzit will work from subdirectories, assuming build notes are in top level of repo
Templates for easily including repeat tasks
Grep topics for pattern and choose from matches
Use positional and named variables when executing tasks
Getting Started
Prerequisites
Ruby 2.4+ (It probably works on older Rubys, but is untested prior to 2.4.1.)
Optional: if fzf is available, it will be used for handling multiple choice selections
Optional: if bat is available it will page with that
If you run into permission errors using the above command, you’ll need to use gem install --user-install howzit. If that fails, either use sudo (sudo gem install howzit) or if you’re using Homebrew, you have the option to install via brew-gem:
This project is licensed under the MIT License - see the LICENSE.txt file for details.
Warranty
This software is provided “as is” and without any express or
implied warranties, including, without limitation, the implied
warranties of merchantibility and fitness for a particular
purpose.
Updated rubocop from version 0.93.1 to 1.82.1 for Ruby 3.4.4 compatibility
Updated .rubocop.yml to use plugins syntax instead of require for rubocop extensions
Updated .rubocop.yml to inherit from .rubocop_todo.yml and removed Max settings that were overriding todo file limits
Added Security/YAMLLoad exception to .rubocop.yml to allow YAML.load usage (intentionally not using safe_load)
Added Layout/LineLength exceptions for files with intentionally long lines (bin/howzit, task.rb, util.rb, stringutils.rb, buildnote.rb)
NEW
Scripts can now communicate back to Howzit by writing to a communication file specified in HOWZIT_COMM_FILE environment variable, allowing scripts to send log messages (LOG:level:message) and set variables (VAR:KEY=value) that are available for subsequent tasks and conditional logic
Added ScriptComm module to handle bidirectional communication between scripts and Howzit
Added @if and @unless conditional blocks that allow content and tasks to be conditionally included or excluded based on evaluated conditions, with support for nested blocks
Conditions can test against metadata keys, environment variables, positional arguments ($1, $2, etc.), named arguments, and script-set variables
Added special condition checks: git dirty/clean, file exists , dir exists , topic exists , and cwd/working directory
Conditions support negation with ‘not’ or ‘!’ prefix
Added @elsif directive for alternative conditions in @if/@unless blocks, allowing multiple conditional branches
Added @else directive for fallback branches in conditional blocks when all previous conditions are false
Conditional blocks now support chaining multiple @elsif statements between @if/@unless and @else
@elsif and @else work correctly with nested conditional blocks
Added **= fuzzy match operator for string comparisons that matches if search string characters appear in order within the target string (e.g., “fluffy” **= “ffy” matches)
Added file contents condition that reads file contents and performs string comparisons using any comparison operator (e.g., file contents VERSION.txt ^= 0.)
File contents condition supports file paths as variables from metadata, named arguments, or environment variables
IMPROVED
Auto-corrected rubocop style offenses including string literals, redundant self, parentheses, and other correctable issues
Fixed Lint/Void issue in buildnote.rb by simplifying conditional logic
Cwd and working directory can now be used with string comparison operators (==, =~, *=, ^=, $=) to check the current directory path
Conditions now support ${var} syntax in addition to var for consistency with variable substitution syntax
String comparison operators (*=, ^=, $=) now treat unquoted strings that aren’t found as variables as literal strings, allowing simpler syntax like template *= gem instead of template *= “gem”
FIXED
Resolved NameError for ‘white’ color method by generating escape codes directly from configured_colors hash instead of calling dynamically generated methods
Fixed infinite recursion in ConsoleLogger by using $stderr.puts directly instead of calling warn method recursively
Color template method now properly respects coloring? setting and returns empty strings when coloring is disabled
Resolved test failures caused by Howzit.buildnote caching stale instances by resetting @buildnote in spec_helper before each test
Fixed bug where @end statements failed to close conditional blocks when conditions evaluated to false, preventing subsequent conditional blocks from working correctly
Fixed issue where named arguments from topic titles were not available when evaluating conditions in conditional blocks
Suppressed EPIPE errors that occur when writing to stdout/stderr after pipes are closed, preventing error messages from appearing in terminal output
2.1.28
2025-12-31 10:21
CHANGED
Refactored code to use more concise unless statement syntax
NEW
Added “token” matching mode for multi-word searches that matches words in order
IMPROVED
Enhanced fuzzy matching to use token-based approach for multi-word searches
Default partial matching now uses token-based matching for better multi-word search results
FIXED
Improved error handling when topics are not found or invalid
Fixed topic selection when using interactive choose mode with topics that have named arguments
Added nil checks to prevent errors when arguments array is nil
Improved handling of empty search terms to prevent matching all topics
2.1.27
2025-12-26 08:59
IMPROVED
Task titles now support variable substitution using ${VAR} syntax, so titles like “@run(echo test) Title with ${var}” will replace ${var} with its value from topic metadata. This applies to all task types (run, copy, open, include) and code block titles.
FIXED
Task and topic names containing dollar signs (like $text$ or ${VAR}) now display correctly in run report output without causing color code interpretation issues. Dollar signs are properly escaped during formatting and unescaped in the final output.
2.1.26
2025-12-26 04:53
FIXED
Bash script variables in run blocks now preserve ${VAR} syntax when the variable is not defined by howzit, allowing bash to handle them normally instead of being replaced with empty strings.
2.1.25
2025-12-19 07:41
NEW
Added default metadata support to automatically run topics when executing howzit --run with no arguments. Supports multiple comma-separated topics with optional bracketed arguments (e.g., default: Build Project, Run Tests[verbose]).
FIXED
Task titles are now correctly displayed in run reports and “Running” messages instead of showing the command. When a title is provided after @run or @include directives (e.g., @run(ls) List directory), the title is used throughout.
Fixed color code interpretation issues when task or topic names contain dollar signs or braces. These characters are now properly escaped to prevent them from being interpreted as color template codes.
Fixed issue where task titles containing braces would show literal {x} in output due to color template parsing.
2.1.24
2025-12-13 07:11
CHANGED
Run summary now displays as simple list with emoji status indicators
IMPROVED
Use horizontal rule (***) as separator instead of box borders
2.1.23
2025-12-13 06:38
CHANGED
Output format changed from bordered text to markdown table
NEW
Added emoji header () to run report table
IMPROVED
Status indicators now use emoji (/) instead of text symbols
Failure messages now show “(exit code X)” instead of “Failed: exit code X”
2.1.22
2025-12-13 06:14
NEW
Template selection menu when creating new build notes
Prompt for required template variables during note creation
Gum support as fallback for menus and text input
IMPROVED
Fuzzy matching for template names when fzf unavailable
Text input uses Readline for proper line editing (backspace, ctrl-a/e)
2.1.21
2025-12-13 05:03
NEW
Prefer exact whole-word topic matches over fuzzy matches
Display run summary after executing tasks
IMPROVED
Topic matching now handles colons/commas in topic titles
Smart splitting of multiple topics preserves separators in titles
Single match from choose now auto-selects without menu
Combined output from multiple topics paginated together
Menu prompt shows the search term being matched
FIXED
String uncolor deleting characters
Broken pipe error when quitting pager early
2.1.20
2025-12-13 05:01
NEW
Prefer exact whole-word topic matches over fuzzy matches
Display run summary after executing tasks
IMPROVED
Topic matching now handles colons/commas in topic titles
Smart splitting of multiple topics preserves separators in titles
Single match from choose now auto-selects without menu
Combined output from multiple topics paginated together
Menu prompt shows the search term being matched
FIXED
String uncolor deleting characters
Broken pipe error when quitting pager early
2.1.19
2025-12-13 05:01
NEW
Prefer exact whole-word topic matches over fuzzy matches
Display run summary after executing tasks
IMPROVED
Topic matching now handles colons/commas in topic titles
Smart splitting of multiple topics preserves separators in titles
Single match from choose now auto-selects without menu
Combined output from multiple topics paginated together
Menu prompt shows the search term being matched
FIXED
String uncolor deleting characters
Broken pipe error when quitting pager early
2.1.18
2025-01-01 09:53
IMPROVED
Include named arguments when listing runnable topics
2.1.16
2024-08-13 10:59
IMPROVED
Add extra linebreak before @include headers
2.1.15
2024-08-07 13:10
FIXED
Prompt for editor when $EDITOR is not defined
Use exec for CLI editors provide a separate process
Remove tests for editor in main executable
2.1.14
2024-08-06 16:36
IMPROVED
Better algorithm for best match when multiple_matches: best is set
2.1.13
2024-08-05 12:04
2.1.12
2024-08-05 12:01
2.1.11
2024-08-05 12:01
2.1.10
2024-04-09 14:59
NEW
–no option (opposite of –yes) to answer no to all yes/no prompts
2.1.9
2023-09-07 11:02
NEW
Add –templates-c to get a completion-compatible list of available templates
2.1.8
2023-05-31 11:58
FIXED
Colors.rb error when code is integer
2.1.7
2023-05-29 12:59
FIXED
Handle variable replacements on lines containing colons outside of variable
2.1.6
2023-05-29 12:42
FIXED
Remove empty undefined variables with no default
2.1.5
2023-04-12 15:13
FIXED
Allow tilde in path to editor
2.1.4
2023-03-07 12:52
NEW
A theme file is automatically created where you can change the default output of any color that Howzit outputs. They can be 2-3 digit ANSI escape codes, or ‘#XXXXXX’ RGB hex codes
2.1.3
2023-03-07 11:21
FIXED
Annoying warning about color template format string having too many arguments
2.1.2
2023-03-07 10:24
IMPROVED
Merge metadata into named variables so they’re also available as ${NAME}
2.1.1
2023-03-07 09:47
FIXED
Allow variables names to contain numbers and underscores
2.1.0
2023-03-07 09:24
NEW
Use TOPIC_TITLE (var1, var2) to have access to ${var1} ${var2} in text and scripts, populated with positional variables on the command line
Add a default (fallback) value to any variable placeholder with ${var_name:default value}
2.0.34
2023-01-15 13:32
FIXED
Fail to partial match include commands after running fzf
2.0.33
2023-01-15 13:26
2.0.32
2023-01-15 10:46
IMPROVED
When using fzf chooser, make matching exact to avoid running multiple topics
2.0.31
2022-08-31 07:17
FIXED
Color template formatting of task output
2.0.30
2022-08-31 07:15
FIXED
Formatting of –help and –version commands
2.0.29
2022-08-30 04:20
NEW
–yes flag will answer yes to all prompts when executing
–force flag will continue executing directives after an error
IMPROVED
A non-zero exit status on a run directive will stop processing additional directives
A little extra output formatting, more descriptive results logging
2.0.28
2022-08-29 18:42
IMPROVED
If a topic runs multiple directives, stop processing them if one returns a non-zero exit status
2.0.27
2022-08-23 12:25
IMPROVED
Code cleanup
2.0.26
2022-08-23 11:36
IMPROVED
Add ctrl-a/d bindings to fzf menu for select/deselect all
2.0.25
2022-08-09 12:46
FIXED
Template metadata inheritence
2.0.24
2022-08-09 09:04
FIXED
Avoid reading upstream files multiple times
2.0.23
2022-08-09 05:51
FIXED
–grep function regression
2.0.22
2022-08-08 13:49
IMPROVED
Paginate output of –templates
FIXED
–templates attempting to create new build note
Fix handling of paths when the same as note_file
2.0.21
2022-08-08 13:16
IMPROVED
Use os-agnostic copy function for –hook
Rename link title for –hook
2.0.20
2022-08-08 11:38
NEW
–hook command for macOS to copy a link to the build note to clipboard
FIXED
Error on –edit-config
Fzf preview empty
2.0.19
2022-08-08 06:18
IMPROVED
Sort options in help output
2.0.18
2022-08-08 03:48
NEW
Use –ask to require confirmation of all tasks when running a topic
2.0.17
2022-08-07 06:09
2.0.16
2022-08-07 06:05
NEW
–edit-template NAME will open a template in your editor, offering to create it if missing
FIXED
If –show-code is given (or :show_all_code: is set to true), show content of @directives instead of title
2.0.15
2022-08-05 17:16
IMPROVED
-R can take an argument to filter results
Show a topic preview when using fzf to select from available topics
Paginate help output
Refactor Topic.run
FIXED
Invalid options for more pager
Error running grep command
Show method not accepting paginate option
2.0.14
2022-08-05 13:24
FIXED
Travis CI fixes
2.0.13
2022-08-05 13:19
IMPROVED
Add tests for more ruby versions via Docker
2.0.12
2022-08-05 11:27
IMPROVED
Show how many tasks will be included when requesting confirmation for an include? directive
2.0.11
2022-08-05 11:21
IMPROVED
Update fish completions with all current command line options
2.0.10
2022-08-05 08:17
IMPROVED
Provide more helpful feedback if no content is found in build note
Confirm whether the user wants to create a new note when one isn’t found
2.0.9
2022-08-05 07:29
IMPROVED
Avoid error trace on interrupt
Better stty settings for y/n prompt
Better coloring of default options in dialogs
FIXED
Encoding issues with older ruby versions
Globbing for build notes was picking up files that contained “build” but not at the beginning of the filename
2.0.8
2022-08-04 13:28
FIXED
Bugfixes
2.0.7
2022-08-04 13:04
NEW
–debug flag (shortcut for :log_level: 0)
IMPROVED
Console output now gets log levels, so :log_level: config option and –quiet/verbose have more utility
2.0.6
2022-08-04 11:08
2.0.5
2022-08-04 10:50
NEW
Make any task optional when running by adding a ? (@open?(…))
Optional tasks default to yes when you hit enter, invert by using a ! (@open?!(…)) to make default “no”
FIXED
Replace escaped newlines in task list output so that they don’t trigger a newline in the shell
2.0.4
2022-08-04 06:25
IMPROVED
Ask to open new buildnote for editing after creation
FIXED
Loop when creating new buildnote
2.0.3
2022-08-04 05:31
IMPROVED
General code cleanup
Attempt at os agnostic @copy command, hopefully works on Windows and Linux systems
FIXED
Not displaying action if title is missing
2.0.2
2022-08-03 18:26
IMPROVED
If a title is provided after an @command, display it instead of the contents when viewing
2.0.1
2022-08-03 12:46
FIXED
Failure to create new notes file when one isn’t found
2.0.0
2022-08-03 12:37
FIXED
Positional arguments not rendering in tasks
Fix degradation where arguments are empty
1.2.19
2022-08-03 12:18
FIXED
–config-get returning non-default options
1.2.18
2022-08-03 12:13
FIXED
Unwritable content property
1.2.17
2022-08-03 12:10
FIXED
Variables in topics not being replaced with metadata
Allow default response in yes/no prompt
1.2.16
2022-08-03 11:41
IMPROVED
Complete code refactoring
FIXED
Multiple includes of upstream files when templates are specified
1.2.15
2022-08-02 11:59
NEW
Option to set :header_format: to block for alternate topic title appearance
FIXED
Missing spacing around topic titles when displaying multiple topics
1.2.14
2022-08-02 11:01
NEW
Config option and flag to determine how to handle multiple results (first, best, all, choose)
–config-get and –config-set flags for working with config options
IMPROVED
Allow multiple selections when using fzf
Clean up newlines in output
1.2.13
2022-08-01 20:50
1.2.12
2022-08-01 16:23
IMPROVED
Replace ANSI escape codes with color template system
When @including an external file, if the file doesn’t contain any level 2+ headers, import it as plain text.
1.2.11
2022-08-01 08:23
IMPROVED
Code cleanup and refactoring
1.2.10
2022-08-01 07:45
FIXED
Headline formatting when iTerm markers are inserted
1.2.8
2022-08-01 07:01
FIXED
Frozen string error
1.2.6
2022-08-01 06:09
NEW
Use @before…@end and @after…@end to specify prerequisites and a post-run message. Topics with @before will require y/n verification before running
FIXED
ITerm markers weren’t being inserted when paging was off
1.2.3
2022-07-31 14:20
IMPROVED
Don’t include a topic multiple times in one display
Don’t execute nested topics more than once
Indicate nested includes in headers
Code cleanup
1.2.2
2022-07-31 08:56
Add -F option to pager setup (quit if less than one screen)
1.2.1
2022-07-31 05:12
Add handling for delta pager to not clear screen on exit
1.2.0
2022-07-31 04:59
Add grep feature, searches topic/content for pattern and displays matches (selection menu if multiple matches)
1.1.27
2022-01-17 11:45
NEW
Use fzf for menus if available
“@run() TITLE” will show TITLE instead of command when listing runnable topics
@include(FILENAME) will import an external file if the path exists
1.1.26
Fix for error in interactive build notes creation
1.1.25
Hide run block contents by default
:show_all_code: config setting to include run block contents
–show-code flag to display run block contents at runtime
Modify include display
1.1.24
Use ~/.config/howzit/ignore.yaml to ignore patterns when scanning for build notes
Use required and optional keys in templates to request that metadata be defined when importing
Allow templates to include other templates
1.1.23
Add flags to allow content to stay onscreen after exiting pager (less and bat)
1.1.21
Merge directive and block handling so execution order is sequential
1.1.20
Template functionality for including common tasks/topics
1.1.19
Add --upstream option to traverse up parent directories for additional build notes
1.1.15
Code refactoring/cleanup
Rename “sections” to “topics”
If no match found for topic search, only show error (:show_all_on_error: false option)
1.1.14
Fix removal of non-alphanumeric characters from titles
-s/–select option to display a menu of all available topics
Allow arguments to be passed after -- for variable substitution
Allow –matching TYPE to match first non-ambigous keyword match
1.1.13
–matching [fuzzy,beginswith,partial,exact] flag
–edit-config flag
sort flags in help
1.1.12
After consideration, remove full fuzzy matching. Too many positives for shorter strings.
1.1.11
Add full fuzzy matching for topic titles
Add @include(TOPIC) command to import another topic’s tasks
1.1.10
Add config file for default options
1.1.9
Use system instead of exec to allow multiple @run commands
Add code block runner
1.1.8
Add -e/--edit flag to open build notes in $EDITOR
1.1.7
Use exec for @run commands to allow interactive processes (e.g. vim)
1.1.6
Add option for outputting title with notes
Add option for outputting note title only
1.1.4
Fix for “topic not found” when run with no arguments
1.1.1
Reorganize and rename long output options
Fix wrapping long lines without spaces
1.1.0
Add -R switch for listing “runnable” topics
Add -T switch for completion-compatible listing of “runnable” topics
Add -L switch for completion-compatible listing of all topics
1.0.1
Allow topic matching within title, not just at start
Remove formatting of topic text for better compatibility with mdless/mdcat
Add @run() syntax to allow executable commands
Add @copy() syntax to copy text to clipboard
Add @url/@open() syntax to open urls/files, OS agnostic (hopefully)
Add support for mdless/mdcat
Add support for pager
Offer to create skeleton buildnotes if none found
Set iTerm 2 marks for navigation when paging is disabled
Wrap output with option to specify width (default 80, 0 to disable)