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Clean up README.md
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README.md
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README.md
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@ -22,68 +22,34 @@ The above example is running from a single shell script ([source](./examples/dem
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Gum provides highly configurable, ready-to-use utilities to help you write
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useful shell scripts and dotfiles aliases with just a few lines of code.
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Let's build a simple script to help you write [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/#summary)
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for your dotfiles.
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Let's build a simple script to help you write [Conventional
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Commits](https://www.conventionalcommits.org/en/v1.0.0/#summary) for your
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dotfiles.
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Start with a `#!/bin/sh`.
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```bash
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#!/bin/sh
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```
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Ask for the commit type with `gum choose`:
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Ask for the commit type with gum choose:p
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```bash
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gum choose "fix" "feat" "docs" "style" "refactor" "test" "chore" "revert"
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```
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> Tip: this command itself will print to `stdout` which is not all that useful.
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To make use of the command later on you can save the stdout to a `$VARIABLE` or
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`file.txt`.
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Prompt for an (optional) scope for the commit:
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> [!NOTE]
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> This command itself will print to stdout which is not all that useful. To make use of the command later on you can save the stdout to a `$VARIABLE` or `file.txt`.
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Prompt for the scope of these changes:
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```bash
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gum input --placeholder "scope"
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```
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Prompt for a commit message:
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Prompt for the summary and description of changes:
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```bash
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gum input --placeholder "Summary of this change"
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gum input --value "$TYPE$SCOPE: " --placeholder "Summary of this change"
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gum write --placeholder "Details of this change"
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```
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Prompt for a detailed (multi-line) explanation of the changes:
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```bash
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gum write --placeholder "Details of this change (CTRL+D to finish)"
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```
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Prompt for a confirmation before committing:
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> `gum confirm` exits with status `0` if confirmed and status `1` if cancelled.
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Confirm before committing:
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```bash
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gum confirm "Commit changes?" && git commit -m "$SUMMARY" -m "$DESCRIPTION"
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```
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Putting it all together...
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```bash
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#!/bin/sh
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TYPE=$(gum choose "fix" "feat" "docs" "style" "refactor" "test" "chore" "revert")
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SCOPE=$(gum input --placeholder "scope")
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# Since the scope is optional, wrap it in parentheses if it has a value.
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test -n "$SCOPE" && SCOPE="($SCOPE)"
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# Pre-populate the input with the type(scope): so that the user may change it
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SUMMARY=$(gum input --value "$TYPE$SCOPE: " --placeholder "Summary of this change")
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DESCRIPTION=$(gum write --placeholder "Details of this change (CTRL+D to finish)")
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# Commit these changes
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gum confirm "Commit changes?" && git commit -m "$SUMMARY" -m "$DESCRIPTION"
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```
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For a working version of the script see how it is all [put together](https://github.com/charmbracelet/gum/blob/main/examples/commit.sh) in a single script.
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<img alt="Running the ./examples/commit.sh script to commit to git" width="600" src="https://stuff.charm.sh/gum/commit_2.gif">
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@ -100,32 +66,8 @@ pacman -S gum
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# Nix
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nix-env -iA nixpkgs.gum
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# Or, with flakes
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nix run "github:charmbracelet/gum" -- --help
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# Debian/Ubuntu
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sudo mkdir -p /etc/apt/keyrings
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curl -fsSL https://repo.charm.sh/apt/gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/charm.gpg
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echo "deb [signed-by=/etc/apt/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | sudo tee /etc/apt/sources.list.d/charm.list
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sudo apt update && sudo apt install gum
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# Fedora/RHEL
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echo '[charm]
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name=Charm
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baseurl=https://repo.charm.sh/yum/
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enabled=1
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gpgcheck=1
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gpgkey=https://repo.charm.sh/yum/gpg.key' | sudo tee /etc/yum.repos.d/charm.repo
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sudo yum install gum
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# Alpine
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apk add gum
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# Android (via termux)
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pkg install gum
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# Windows (via WinGet or Scoop)
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winget install charmbracelet.gum
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scoop install charm-gum
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```
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@ -142,25 +84,40 @@ go install github.com/charmbracelet/gum@latest
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[releases]: https://github.com/charmbracelet/gum/releases
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## Commands
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* [`choose`](#choose): Choose an option from a list of choices
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* [`confirm`](#confirm): Ask a user to confirm an action
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* [`file`](#file): Pick a file from a folder
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* [`filter`](#filter): Filter items from a list
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* [`format`](#format): Format a string using a template
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* [`input`](#input): Prompt for some input
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* [`join`](#join): Join text vertically or horizontally
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* [`pager`](#pager): Scroll through a file
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* [`spin`](#spin): Display spinner while running a command
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* [`style`](#style): Apply coloring, borders, spacing to text
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* [`table`](#table): Render a table of data
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* [`write`](#write): Prompt for long-form text
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* [`log`](#log): Log messages to output
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## Customization
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`gum` is designed to be embedded in scripts and supports all sorts of use
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cases. Components are configurable and customizable to fit your theme and
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use case.
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You can customize with `--flags`. See `gum <command> --help` for a full view of
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each command's customization and configuration options.
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For example, let's use an `input` and change the cursor color, prompt color,
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prompt indicator, placeholder text, width, and pre-populate the value:
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You can customize `gum` options and styles with `--flags` and `$ENVIRONMENT_VARIABLES`.
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See `gum <command> --help` for a full view of each command's customization and configuration options.
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Customize with `--flags`:
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```bash
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gum input --cursor.foreground "#FF0" --prompt.foreground "#0FF" --prompt "* " \
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--placeholder "What's up?" --width 80 --value "Not much, hby?"
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gum input --cursor.foreground "#FF0" \
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--prompt.foreground "#0FF" \
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--placeholder "What's up?" \
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--prompt "* " \
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--width 80 \
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--value "Not much, hby?"
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```
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You can also use `ENVIRONMENT_VARIABLES` to customize `gum` by default, this is
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useful to keep a consistent theme for all your `gum` commands.
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Customize with `ENVIRONMENT_VARIABLES`:
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```bash
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export GUM_INPUT_CURSOR_FOREGROUND="#FF0"
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export GUM_INPUT_PROMPT="* "
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export GUM_INPUT_WIDTH=80
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# Uses values configured through environment variables above but can still be
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# overridden with flags.
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# --flags can override values set with environment
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gum input
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```
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<img alt="Gum input displaying most customization options" width="600" src="https://stuff.charm.sh/gum/customization.gif">
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## Interaction
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#### Input
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## Input
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Prompt for input with a simple command.
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```bash
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gum input > answer.txt
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```
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Prompt for sensitive input with the `--password` flag.
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```bash
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gum input --password > password.txt
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```
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<img src="https://stuff.charm.sh/gum/input_1.gif" width="600" alt="Shell running gum input typing Not much, you?" />
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#### Write
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## Write
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Prompt for some multi-line text.
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Note: `CTRL+D` is used to complete text entry. `CTRL+C` and `esc` will cancel.
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Prompt for some multi-line text (`ctrl+d` to complete text entry).
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```bash
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gum write > story.txt
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@ -206,35 +153,27 @@ gum write > story.txt
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<img src="https://stuff.charm.sh/gum/write.gif" width="600" alt="Shell running gum write typing a story" />
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#### Filter
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## Filter
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Use fuzzy matching to filter a list of values:
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Filter a list of values with fuzzy matching:
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```bash
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echo Strawberry >> flavors.txt
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echo Banana >> flavors.txt
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echo Cherry >> flavors.txt
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cat flavors.txt | gum filter > selection.txt
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gum filter < flavors.txt > selection.txt
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```
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<img src="https://stuff.charm.sh/gum/filter.gif" width="600" alt="Shell running gum filter on different bubble gum flavors" />
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You can also select multiple items with the `--limit` flag, which determines
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the maximum number of items that can be chosen.
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Pressing `tab` or `ctrl+space` will select the current item, while `enter` will confirm the selection.
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Select multiple options with the `--limit` flag or `--no-limit` flag. Use `tab` or `ctrl+space` to select, `enter` to confirm.
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```bash
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cat flavors.txt | gum filter --limit 2
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```
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Or, allow any number of selections with the `--no-limit` flag.
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```bash
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cat flavors.txt | gum filter --no-limit
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```
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#### Choose
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## Choose
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Choose an option from a list of choices.
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echo "Was your card the $CARD?"
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```
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You can also select multiple items with the `--limit` flag, which determines
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You can also select multiple items with the `--limit` or `--no-limit` flag, which determines
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the maximum of items that can be chosen.
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```bash
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echo "Pick your top 5 songs."
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cat songs.txt | gum choose --limit 5
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```
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Or, allow any number of selections with the `--no-limit` flag.
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```bash
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echo "What do you need from the grocery store?"
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cat foods.txt | gum choose --no-limit
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cat foods.txt | gum choose --no-limit --header "Grocery Shopping"
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```
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<img src="https://stuff.charm.sh/gum/choose.gif" width="600" alt="Shell running gum choose with numbers and gum flavors" />
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#### Confirm
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## Confirm
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Confirm whether to perform an action. Exits with code `0` (affirmative) or `1`
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(negative) depending on selection.
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<img src="https://stuff.charm.sh/gum/confirm_2.gif" width="600" alt="Shell running gum confirm" />
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#### File
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## File
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Prompt the user to select a file from the file tree.
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<img src="https://stuff.charm.sh/gum/file.gif" width="600" alt="Shell running gum file" />
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#### Pager
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## Pager
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Scroll through a long document with line numbers and a fully customizable viewport.
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<img src="https://stuff.charm.sh/gum/pager.gif" width="600" alt="Shell running gum pager" />
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#### Spin
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## Spin
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Display a spinner while running a script or command. The spinner will
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automatically stop after the given command exits.
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Available spinner types include: `line`, `dot`, `minidot`, `jump`, `pulse`, `points`, `globe`, `moon`, `monkey`, `meter`, `hamburger`.
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#### Table
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## Table
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Select a row from some tabular data.
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<img src="https://stuff.charm.sh/gum/table.gif" width="600" alt="Shell running gum table" />
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## Styling
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#### Style
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## Style
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Pretty print any string with any layout with one command.
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<img src="https://stuff.charm.sh/gum/style.gif" width="600" alt="Bubble Gum, So sweet and so fresh!" />
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## Layout
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#### Join
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## Join
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Combine text vertically or horizontally. Use this command with `gum style` to
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build layouts and pretty output.
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