diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 0000000..43abf1a
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,16 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.222.0/containers/javascript-node/.devcontainer/base.Dockerfile
+
+# [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 16, 14, 12, 16-bullseye, 14-bullseye, 12-bullseye, 16-buster, 14-buster, 12-buster
+ARG VARIANT="16"
+FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:0-${VARIANT}
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment if you want to install an additional version of node using nvm
+# ARG EXTRA_NODE_VERSION=10
+# RUN su node -c "source/usr/local/share/nvm/nvm.sh && nvm install ${EXTRA_NODE_VERSION}"
+
+# [Optional] Uncomment if you want to install more global node modules
+# RUN su node -c "npm install -g <your-package-list-here>" 
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..bf736f9
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,32 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.222.0/containers/javascript-node
+{
+	"name": "Node.js",
+	"build": {
+		"dockerfile": "Dockerfile",
+		// Update 'VARIANT' to pick a Node version: 16, 14, 12.
+		// Append -bullseye or -buster to pin to an OS version.
+		// Use -bullseye variants on local arm64/Apple Silicon.
+		"args": { "VARIANT": "16" }
+	},
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": {},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"dbaeumer.vscode-eslint"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+
+	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "node",
+	"features": {
+		"git": "latest"
+	}
+}
diff --git a/.github/workflows/publish-pages.yml b/.github/workflows/publish-pages.yml
new file mode 100644
index 0000000..d06e856
--- /dev/null
+++ b/.github/workflows/publish-pages.yml
@@ -0,0 +1,50 @@
+name: Publish Pages site
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 12.x
+
+      - run: npm install
+
+      - run: npm run build
+
+      - name: Copy files
+        run: |
+          mkdir _site
+          cp -r pages _site
+          cp -r dist _site
+
+      - name: Fix permissions
+        run: |
+          chmod -c -R +rX "_site/" | while read line; do
+            echo "::warning title=Invalid file permissions automatically fixed::$line"
+          done
+
+      - uses: actions/upload-pages-artifact@v2
+
+  deploy:
+    needs: build
+
+    permissions:
+      pages: write
+      id-token: write
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v2
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..c1b229d
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,24 @@
+name: Publish
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish-npm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14
+          registry-url: https://registry.npmjs.org/
+          cache: npm
+      - run: npm ci
+      - run: npm test
+      - run: npm version ${TAG_NAME} --git-tag-version=false
+        env:
+          TAG_NAME: ${{ github.event.release.tag_name }}
+      - run: npm whoami; npm --ignore-scripts publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index 11a2fe6..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-name: Release and publish
-
-# Inspired by https://github.com/MylesBorins/node-osc/blob/959b9c83972a67390a351d333b23db3972ca7b46/.github/workflows/bump-version.yml and
-#             https://github.com/MylesBorins/node-osc/blob/74b563c83736a04c4a37acbff9d7bb1f01a00f57/.github/workflows/create-release.yml
-
-on:
-  workflow_dispatch:
-    inputs:
-      version:
-        description: Semver descriptor for new version ("major", "minor", or "patch")
-        required: true
-
-jobs:
-  bump-version:
-    name: Bump package version
-    runs-on: ubuntu-latest
-    outputs:
-      new-tag: ${{ steps.new-tag.outputs.new-tag }}
-    steps:
-      - name: Checkout ref
-        uses: actions/checkout@v2
-      - name: Preparation
-        uses: ./.github/actions/setup
-      - name: Perform last-minute tests
-        run: npm test
-      - name: Configure Git
-        run: |
-          git config user.name "GitHub Actions"
-          git config user.email "actions@github.com"
-      - name: Bump package version
-        run: npm version ${{ github.event.inputs.version }}
-      - name: Push back to GitHub
-        run: git push origin main --follow-tags
-      - name: Set output to new version
-        id: new-tag
-        run: |
-          version=$(jq -r .version < package.json)
-          echo "::set-output name=new-tag::v$version"
-  create-release:
-    name: Create GitHub release
-    runs-on: ubuntu-latest
-    needs: bump-version
-    steps:
-      - name: Checkout ref
-        uses: actions/checkout@v2
-        with:
-          ref: ${{ needs.bump-version.outputs.new-tag }}
-      - name: Preparation
-        uses: ./.github/actions/setup
-      - name: Create release
-        uses: actions/github-script@v5
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            await github.request(`POST /repos/${{ github.repository }}/releases`, {
-              tag_name: "${{ needs.bump-version.outputs.new-tag }}",
-              generate_release_notes: true
-            })
-  publish:
-    name: Publish to npm
-    runs-on: ubuntu-latest
-    needs: [bump-version, create-release]
-    steps:
-      - name: Checkout ref
-        uses: actions/checkout@v2
-        with:
-          ref: ${{ needs.bump-version.outputs.new-tag }}
-      - name: Preparation
-        uses: ./.github/actions/setup
-      - name: Build package
-        run: npm run build --if-present
-      - name: Publish
-        run: npm publish --access public
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/.gitignore b/.gitignore
index b947077..dd50801 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules/
 dist/
+_site/
diff --git a/README.md b/README.md
index b75e5f2..4eea02e 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,20 @@
 <button data-hotkey="Shift+?">Show help dialog</button>
 ```
 
-Trigger an action on a target element when a key, or sequence of keys, is pressed
+Trigger an action on a target element when the hotkey (key or sequence of keys) is pressed
 on the keyboard. This triggers a focus event on form fields, or a click event on
 other elements.
 
+The hotkey can be scoped to a form field:
+
+```html
+<button data-hotkey-scope="text-area" data-hotkey="Meta+d" onclick="alert('clicked')">
+  press meta+d in text area to click this button
+</button>
+
+<textarea id="text-area">text area</textarea>
+```
+
 By default, hotkeys are extracted from a target element's `data-hotkey`
 attribute, but this can be overridden by passing the hotkey to the registering
 function (`install`) as a parameter.
@@ -70,6 +80,24 @@ for (const el of document.querySelectorAll('[data-hotkey]')) {
 }
 ```
 
+By default form elements (such as `input`,`textarea`,`select`) or elements with `contenteditable` will call `focus()` when the hotkey is triggered. All other elements trigger a `click()`. All elements, regardless of type, will emit a cancellable `hotkey-fire` event, so you can customize the behaviour, if you so choose:
+
+```js
+for (const el of document.querySelectorAll('[data-shortcut]')) {
+  install(el, el.dataset.shortcut)
+  
+  if (el.matches('.frobber')) {
+    el.addEventListener('hotkey-fire', event => {
+      // ensure the default `focus()`/`click()` is prevented:
+      event.preventDefault()
+      
+      // Use a custom behaviour instead 
+      frobulateFrobber(event.target)
+    })
+  }
+}
+```
+
 ## Hotkey string format
 
 1. Hotkey matches against the `event.key`, and uses standard W3C key names for keys and modifiers as documented in [UI Events KeyboardEvent key Values](https://www.w3.org/TR/uievents-key/).
@@ -81,6 +109,7 @@ for (const el of document.querySelectorAll('[data-hotkey]')) {
    1. `"Mod+"` can appear in any order in a hotkey string. For example: `"Mod+Alt+Shift+KEY"`
    2. Neither the `Control` or `Meta` modifiers should appear in a hotkey string with `Mod`.
    3. Due to the inconsistent lowercasing of `event.key` on Mac and iOS when `Meta` is pressed along with `Shift`, it is recommended to avoid hotkey strings containing both `Mod` and `Shift`.
+7. You can use the comma key `,` as a hotkey, e.g. `a,,` would activate if the user typed `a` or `,`. `Control+,,x` would activate for `Control+,` or `x`.
 
 ### Example
 
diff --git a/examples/hotkey_mapper.html b/examples/hotkey_mapper.html
deleted file mode 100644
index d33343a..0000000
--- a/examples/hotkey_mapper.html
+++ /dev/null
@@ -1,61 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width" />
-    <title>Hotkey Mapper Tool</title>
-    <link href="https://unpkg.com/@primer/css@^16.0.0/dist/primer.css" rel="stylesheet" />
-    <script type="module" src="https://unpkg.com/@github/clipboard-copy-element@latest?module"></script>
-    <style>
-      .copy {
-        /* marg */
-      }
-    </style>
-  </head>
-
-  <body>
-    <div class="blankslate mx-auto col-12 col-md-8 col-lg-6">
-      <h1>Hotkey Code</h1>
-      <p>Type your desired key combination on the keyboard to see the corresponding Hotkey string.</p>
-      <div class="position-relative">
-        <clipboard-copy for="hotkey-code" class="position-absolute top-2 right-2">
-          <button aria-label="Copy to clipboard" class="btn">
-            <svg
-              aria-hidden="true"
-              role="img"
-              class="StyledOcticon-uhnt7w-0 iIOaoH"
-              viewBox="0 0 16 16"
-              width="16"
-              height="16"
-              fill="currentColor"
-              style="display: inline-block; user-select: none; vertical-align: text-bottom; overflow: visible"
-            >
-              <path
-                fill-rule="evenodd"
-                d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z"
-              ></path>
-              <path
-                fill-rule="evenodd"
-                d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z"
-              ></path>
-            </svg>
-          </button>
-        </clipboard-copy>
-        <div id="hotkey-code" class="border rounded-2 p-6 f1 text-mono overflow-auto">&nbsp;</div>
-      </div>
-    </div>
-
-    <script type="module">
-      // import {eventToHotkeyString} from '../dist/index.js'
-      import {eventToHotkeyString} from 'https://unpkg.com/@github/hotkey@latest?module'
-      const codeInput = document.getElementById('hotkey-code')
-      document.addEventListener('keydown', event => {
-        const code = eventToHotkeyString(event)
-        console.log(`Hotkey Code is: "${code}"`)
-        codeInput.innerText = code
-        event.preventDefault()
-        event.stopPropagation()
-      })
-    </script>
-  </body>
-</html>
diff --git a/examples/index.html b/examples/index.html
deleted file mode 100644
index cd8d5e2..0000000
--- a/examples/index.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width" />
-    <title>hotkey demo</title>
-  </head>
-
-  <body>
-    <label for="text-area-1">Hotkey Focus example 1</label><br />
-    <textarea id="text-area-1" rows="4" cols="40">text area 1</textarea><br />
-    <button onclick="alert('clicked button 1!')" data-hotkey-scope="text-area-1" data-hotkey="Control+d,Meta+d">
-      press meta+d or ctrl+d in text area 1 to click button 1</button
-    ><br />
-    <label for="text-area-2">Hotkey Focus example 2</label><br />
-    <textarea id="text-area-2" rows="4" cols="40">text area 2</textarea><br />
-    <button onclick="alert('clicked button 2!')" data-hotkey-scope="text-area-2" data-hotkey="Control+d,Meta+d">
-      press meta+d or ctrl+d in text area 2 to click button 2</button
-    ><br />
-    <label><input data-hotkey="t" type="text" />Press t to focus this field</label><br />
-    <label><input data-hotkey="r" type="checkbox" />Press r to check/uncheck this checkbox</label><br />
-    <a href="#ok" data-hotkey="o k">Press <kbd>o k</kbd> click this link</a>
-
-    <script type="module">
-      // import {install} from '../dist/index.js'
-      import {install} from 'https://unpkg.com/@github/hotkey@latest?module'
-
-      for (const el of document.querySelectorAll('[data-hotkey]')) {
-        install(el)
-      }
-    </script>
-  </body>
-</html>
diff --git a/karma.config.cjs b/karma.config.cjs
index eee9e86..0c9794e 100644
--- a/karma.config.cjs
+++ b/karma.config.cjs
@@ -1,3 +1,5 @@
+process.env.CHROME_BIN = require('chromium').path
+
 module.exports = function (config) {
   config.set({
     frameworks: ['mocha', 'chai'],
diff --git a/package-lock.json b/package-lock.json
index 0a1f6df..b8e4287 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,17 @@
 {
   "name": "@github/hotkey",
-  "version": "1.6.1",
+  "version": "2.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@github/hotkey",
-      "version": "1.6.1",
+      "version": "2.0.0",
       "license": "MIT",
       "devDependencies": {
         "@github/prettier-config": "0.0.4",
         "chai": "^4.2.0",
+        "chromium": "^3.0.3",
         "eslint": "^7.22.0",
         "eslint-plugin-github": "^4.0.0",
         "karma": "^6.2.0",
@@ -196,6 +197,42 @@
         "node": ">= 8"
       }
     },
+    "node_modules/@sindresorhus/is": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-4.4.0.tgz",
+      "integrity": "sha512-QppPM/8l3Mawvh4rn9CNEYIU9bxpXUCRMaX9yUpvBk1nMKusLKpfXGDEKExKaPhLzcn3lzil7pR6rnJ11HgeRQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sindresorhus/is?sponsor=1"
+      }
+    },
+    "node_modules/@szmarczak/http-timer": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/@szmarczak/http-timer/-/http-timer-4.0.6.tgz",
+      "integrity": "sha512-4BAffykYOgO+5nzBWYwE3W90sBgLJoUPRWWcL8wlyiM8IB8ipJz3UMJ9KXQd1RKQXpKp8Tutn80HZtWsu2u76w==",
+      "dev": true,
+      "dependencies": {
+        "defer-to-connect": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/@types/cacheable-request": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@types/cacheable-request/-/cacheable-request-6.0.2.tgz",
+      "integrity": "sha512-B3xVo+dlKM6nnKTcmm5ZtY/OL8bOAOd2Olee9M1zft65ox50OzjEHW91sDiU9j6cvW8Ejg1/Qkf4xd2kugApUA==",
+      "dev": true,
+      "dependencies": {
+        "@types/http-cache-semantics": "*",
+        "@types/keyv": "*",
+        "@types/node": "*",
+        "@types/responselike": "*"
+      }
+    },
     "node_modules/@types/component-emitter": {
       "version": "1.2.10",
       "resolved": "https://registry.npmjs.org/@types/component-emitter/-/component-emitter-1.2.10.tgz",
@@ -214,6 +251,12 @@
       "integrity": "sha512-C7srjHiVG3Ey1nR6d511dtDkCEjxuN9W1HWAEjGq8kpcwmNM6JJkpC0xvabM7BXTG2wDq8Eu33iH9aQKa7IvLQ==",
       "dev": true
     },
+    "node_modules/@types/http-cache-semantics": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/@types/http-cache-semantics/-/http-cache-semantics-4.0.1.tgz",
+      "integrity": "sha512-SZs7ekbP8CN0txVG2xVRH6EgKmEm31BOxA07vkFaETzZz1xh+cbt8BcI0slpymvwhx5dlFnQG2rTlPVQn+iRPQ==",
+      "dev": true
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.7",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.7.tgz",
@@ -226,12 +269,30 @@
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4=",
       "dev": true
     },
+    "node_modules/@types/keyv": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/@types/keyv/-/keyv-3.1.3.tgz",
+      "integrity": "sha512-FXCJgyyN3ivVgRoml4h94G/p3kY+u/B86La+QptcqJaWtBWtmc6TtkNfS40n9bIvyLteHh7zXOtgbobORKPbDg==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "14.14.35",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.35.tgz",
       "integrity": "sha512-Lt+wj8NVPx0zUmUwumiVXapmaLUcAk3yPuHCFVXras9k5VT9TdhJqKqGVUQCD60OTMCl0qxJ57OiTL0Mic3Iag==",
       "dev": true
     },
+    "node_modules/@types/responselike": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/responselike/-/responselike-1.0.0.tgz",
+      "integrity": "sha512-85Y2BjiufFzaMIlvJDvTTB8Fxl2xfLo4HgmHzVBz08w4wDePCTjYw66PdrolO0kzli3yam/YCgRufyo1DdQVTA==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "4.18.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.18.0.tgz",
@@ -660,6 +721,21 @@
       "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
       "dev": true
     },
+    "node_modules/buffer-crc32": {
+      "version": "0.2.13",
+      "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
+      "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=",
+      "dev": true,
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+      "dev": true
+    },
     "node_modules/bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -669,6 +745,42 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/cacheable-lookup": {
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/cacheable-lookup/-/cacheable-lookup-5.0.4.tgz",
+      "integrity": "sha512-2/kNscPhpcxrOigMZzbiWF7dz8ilhb/nIHU3EyZiXWXpeq/au8qJ8VhdftMkty3n7Gj6HIGalQG8oiBNB3AJgA==",
+      "dev": true,
+      "engines": {
+        "node": ">=10.6.0"
+      }
+    },
+    "node_modules/cacheable-request": {
+      "version": "7.0.2",
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+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+          "dev": true
+        }
+      }
+    },
     "string-width": {
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.2.tgz",
@@ -7261,6 +8202,12 @@
         "tslib": "^1.8.1"
       }
     },
+    "tunnel": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/tunnel/-/tunnel-0.0.6.tgz",
+      "integrity": "sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg==",
+      "dev": true
+    },
     "type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -7292,6 +8239,12 @@
         "mime-types": "~2.1.24"
       }
     },
+    "typedarray": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
+      "dev": true
+    },
     "typescript": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.3.tgz",
@@ -7337,6 +8290,12 @@
         "punycode": "^2.1.0"
       }
     },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "dev": true
+    },
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
@@ -7516,6 +8475,16 @@
         "is-plain-obj": "^2.1.0"
       }
     },
+    "yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
+      "dev": true,
+      "requires": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    },
     "yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
diff --git a/package.json b/package.json
index 35fbc7a..1b4365f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@github/hotkey",
-  "version": "1.6.1",
+  "version": "2.0.0",
   "description": "",
   "main": "dist/index.js",
   "type": "module",
@@ -14,8 +14,7 @@
     "clean": "rm -rf dist",
     "prebuild": "npm run clean && npm run lint && mkdir dist",
     "pretest": "npm run build",
-    "prepublishOnly": "npm run build",
-    "postpublish": "npm publish --ignore-scripts --@github:registry='https://npm.pkg.github.com'"
+    "prepublishOnly": "npm run build"
   },
   "files": [
     "dist",
@@ -27,6 +26,7 @@
   "devDependencies": {
     "@github/prettier-config": "0.0.4",
     "chai": "^4.2.0",
+    "chromium": "^3.0.3",
     "eslint": "^7.22.0",
     "eslint-plugin-github": "^4.0.0",
     "karma": "^6.2.0",
diff --git a/pages/demo.html b/pages/demo.html
new file mode 100644
index 0000000..673cd32
--- /dev/null
+++ b/pages/demo.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <title>hotkey demo</title>
+</head>
+
+<body>
+
+  <button onclick="alert('clicked button 1!')" data-hotkey-scope="text-area-1" data-hotkey="Control+d,Meta+d">press meta+d or ctrl+d in text area 1 to click button 1</button><br>
+  <textarea id="text-area-1" rows="4" cols="40">text area 1</textarea><br>
+  <button onclick="alert('clicked button 2!')" data-hotkey-scope="text-area-2" data-hotkey="Control+d,Meta+d">press meta+d or ctrl+d in text area 2 to click button 2</button><br>
+  <textarea id="text-area-2" rows="4" cols="40">text area 2</textarea><br>
+  <label><input data-hotkey="t" type="text">Press t to focus this field</label><br>
+  <label><input data-hotkey="r" type="checkbox">Press r to check/uncheck this checkbox</label><br>
+  <a href="#ok" data-hotkey="o k">Press <kbd>o k</kbd> click this link</a>
+
+  <script type="module">
+    // import {install} from '../dist/index.js'
+    import {install} from 'https://unpkg.com/@github/hotkey@latest?module'
+
+    for (const el of document.querySelectorAll('[data-hotkey]')) {
+      install(el)
+    }
+  </script>
+</body>
+
+</html>
diff --git a/pages/hotkey_mapper.html b/pages/hotkey_mapper.html
new file mode 100644
index 0000000..5315559
--- /dev/null
+++ b/pages/hotkey_mapper.html
@@ -0,0 +1,92 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width">
+  <title>hotkey | Mapper Tool</title>
+  <link href="https://unpkg.com/@primer/css@^21.0.8/dist/primer.css" rel="stylesheet" />
+  <script type="module" src="https://unpkg.com/@github/clipboard-copy-element@latest?module"></script>
+</head>
+
+<body>
+  <div class="mx-auto my-3 col-12 col-md-8 col-lg-6">
+    <h1 id="app-name">Hotkey Code</h1>
+    <p id="hint">Press a key combination to see the corresponding hotkey string. Quickly press another combination to build a sequence.</p>
+    <div class="position-relative">
+      <input
+        readonly
+        role="application"
+        aria-roledescription="Input Capture"
+        autofocus
+        aria-labelledby="app-name"
+        aria-describedby="hint sequence-hint"
+        aria-live="assertive"
+        aria-atomic="true"
+        id="hotkey-code"
+        class="border rounded-2 mt-2 p-6 f1 text-mono"
+        style="width: 100%"
+      />
+
+      <div class="position-absolute bottom-2 left-3 right-3 d-flex" style="align-items: center; gap: 8px">
+        <!-- This indicates that the input is listening for a sequence press. Ideally we'd have a way to tell screen
+        readers this too, but if we make this live and add more text it will get annoying because it will conflict
+        with the already-live input above. -->
+        <p id="sequence-status" class="color-fg-subtle" style="margin: 0" aria-hidden hidden>→</p>
+
+        <span style="flex: 1"></span>
+
+        <button id="reset-button" class="btn">Reset</button>
+
+        <clipboard-copy for="hotkey-code" class="btn">
+          Copy to clipboard
+        </clipboard-copy>
+      </div>
+    </div>
+  </div>
+
+  <script type="module">
+    import {eventToHotkeyString} from '../dist/index.js'
+    import sequenceTracker from '../dist/sequence.js'
+
+    const hotkeyCodeElement = document.getElementById('hotkey-code')
+    const sequenceStatusElement = document.getElementById('sequence-status')
+    const resetButtonElement = document.getElementById('reset-button')
+
+    const sequenceTracker = new sequenceTracker({
+      onReset() {
+        sequenceStatusElement.hidden = true
+      }
+    })
+
+    let currentsequence = null
+
+    hotkeyCodeElement.addEventListener('keydown', event => {
+      if (event.key === "Tab") 
+        return;
+
+      event.preventDefault();
+      event.stopPropagation();
+
+      currentsequence = eventToHotkeyString(event)
+      event.currentTarget.value = [...sequenceTracker.path, currentsequence].join(' ');
+    })
+
+    hotkeyCodeElement.addEventListener('keyup', () => {
+      // we don't just build the sequence from the keyup event because keyups don't necessarily map to keydowns - for
+      // example, the keyup event for meta+b is just meta.
+      if (currentsequence) {
+        sequenceTracker.registerKeypress(currentsequence)
+        sequenceStatusElement.hidden = false
+        currentsequence = null
+      }
+    })
+
+    resetButtonElement.addEventListener('click', () => {
+      sequenceTracker.reset()
+      hotkeyCodeElement.value = ''
+    })
+  </script>
+</body>
+
+</html>
diff --git a/pages/index.html b/pages/index.html
new file mode 100644
index 0000000..68cdde3
--- /dev/null
+++ b/pages/index.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width">
+  <title>hotkey</title>
+  <link href="https://unpkg.com/@primer/css@^16.0.0/dist/primer.css" rel="stylesheet" />
+</head>
+
+<body>
+  <div class="mx-auto my-3 col-12 col-md-8 col-lg-6">
+    <h1 class="text-mono">@github/hotkey</h1>
+    <nav>
+      <ul>
+        <li><a href="https://github.com/github/hotkey">Repository & docs</a></li>
+        <li><a href="hotkey_mapper.html">Mapper tool</a></li>
+        <li><a href="demo.html">Demo</a></li>
+      </ul>
+    </nav>
+  </div>
+</body>
+
+</html>
diff --git a/src/index.ts b/src/index.ts
index 5657f80..9ef99e2 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,20 +1,19 @@
 import {Leaf, RadixTrie} from './radix-trie'
 import {fireDeterminedAction, expandHotkeyToEdges, isFormField} from './utils'
 import eventToHotkeyString from './hotkey'
+import SequenceTracker from './sequence'
 
 export * from './normalize-hotkey'
 
 const hotkeyRadixTrie = new RadixTrie<HTMLElement>()
 const elementsLeaves = new WeakMap<HTMLElement, Array<Leaf<HTMLElement>>>()
 let currentTriePosition: RadixTrie<HTMLElement> | Leaf<HTMLElement> = hotkeyRadixTrie
-let resetTriePositionTimer: number | null = null
-let path: string[] = []
 
-function resetTriePosition() {
-  path = []
-  resetTriePositionTimer = null
-  currentTriePosition = hotkeyRadixTrie
-}
+const sequenceTracker = new SequenceTracker({
+  onReset() {
+    currentTriePosition = hotkeyRadixTrie
+  }
+})
 
 function keyDownHandler(event: KeyboardEvent) {
   if (event.defaultPrevented) return
@@ -24,19 +23,15 @@ function keyDownHandler(event: KeyboardEvent) {
     if (!target.id) return
     if (!target.ownerDocument.querySelector(`[data-hotkey-scope="${target.id}"]`)) return
   }
-  if (resetTriePositionTimer != null) {
-    window.clearTimeout(resetTriePositionTimer)
-  }
-  resetTriePositionTimer = window.setTimeout(resetTriePosition, 1500)
 
   // If the user presses a hotkey that doesn't exist in the Trie,
   // they've pressed a wrong key-combo and we should reset the flow
   const newTriePosition = (currentTriePosition as RadixTrie<HTMLElement>).get(eventToHotkeyString(event))
   if (!newTriePosition) {
-    resetTriePosition()
+    sequenceTracker.reset()
     return
   }
-  path.push(eventToHotkeyString(event))
+  sequenceTracker.registerKeypress(eventToHotkeyString(event))
 
   currentTriePosition = newTriePosition
   if (newTriePosition instanceof Leaf) {
@@ -55,11 +50,11 @@ function keyDownHandler(event: KeyboardEvent) {
     }
 
     if (elementToFire && shouldFire) {
-      fireDeterminedAction(elementToFire, path)
+      fireDeterminedAction(elementToFire, sequenceTracker.path)
       event.preventDefault()
     }
 
-    resetTriePosition()
+    sequenceTracker.reset()
   }
 }
 
diff --git a/src/sequence.ts b/src/sequence.ts
new file mode 100644
index 0000000..a40d133
--- /dev/null
+++ b/src/sequence.ts
@@ -0,0 +1,42 @@
+interface SequenceTrackerOptions {
+  onReset?: () => void
+}
+
+export default class SequenceTracker {
+  static readonly CHORD_TIMEOUT = 1500
+
+  private _path: readonly string[] = []
+  private timer: number | null = null
+  private onReset
+
+  constructor({onReset}: SequenceTrackerOptions = {}) {
+    this.onReset = onReset
+  }
+
+  get path(): readonly string[] {
+    return this._path
+  }
+
+  registerKeypress(hotkey: string): void {
+    this._path = [...this._path, hotkey]
+    this.startTimer()
+  }
+
+  reset(): void {
+    this.killTimer()
+    this._path = []
+    this.onReset?.()
+  }
+
+  private killTimer(): void {
+    if (this.timer != null) {
+      window.clearTimeout(this.timer)
+    }
+    this.timer = null
+  }
+
+  private startTimer(): void {
+    this.killTimer()
+    this.timer = window.setTimeout(() => this.reset(), SequenceTracker.CHORD_TIMEOUT)
+  }
+}
diff --git a/src/utils.ts b/src/utils.ts
index 5b7a079..b1e7660 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -10,12 +10,17 @@ export function isFormField(element: Node): boolean {
   return (
     name === 'select' ||
     name === 'textarea' ||
-    (name === 'input' && type !== 'submit' && type !== 'reset' && type !== 'checkbox' && type !== 'radio') ||
+    (name === 'input' &&
+      type !== 'submit' &&
+      type !== 'reset' &&
+      type !== 'checkbox' &&
+      type !== 'radio' &&
+      type !== 'file') ||
     element.isContentEditable
   )
 }
 
-export function fireDeterminedAction(el: HTMLElement, path: string[]): void {
+export function fireDeterminedAction(el: HTMLElement, path: readonly string[]): void {
   const delegateEvent = new CustomEvent('hotkey-fire', {cancelable: true, detail: {path}})
   const cancelled = !el.dispatchEvent(delegateEvent)
   if (cancelled) return
@@ -27,5 +32,37 @@ export function fireDeterminedAction(el: HTMLElement, path: string[]): void {
 }
 
 export function expandHotkeyToEdges(hotkey: string): string[][] {
-  return hotkey.split(',').map(edge => edge.split(' ').map(k => normalizeHotkey(k)))
+  // NOTE: we can't just split by comma, since comma is a valid hotkey character!
+  const output = []
+  let acc = ['']
+  let commaIsSeparator = false
+  for (let i = 0; i < hotkey.length; i++) {
+    if (commaIsSeparator && hotkey[i] === ',') {
+      output.push(acc)
+      acc = ['']
+      commaIsSeparator = false
+      continue
+    }
+
+    if (hotkey[i] === ' ') {
+      // Spaces are used to separate key sequences, so a following comma is
+      // part of the sequence, not a separator.
+      acc.push('')
+      commaIsSeparator = false
+      continue
+    } else if (hotkey[i] === '+') {
+      // If the current character is a +, a following comma is part of the
+      // shortcut and not a separator.
+      commaIsSeparator = false
+    } else {
+      commaIsSeparator = true
+    }
+
+    acc[acc.length - 1] += hotkey[i]
+  }
+
+  output.push(acc)
+
+  // Remove any empty hotkeys/sequences
+  return output.map(h => h.map(k => normalizeHotkey(k)).filter(k => k !== '')).filter(h => h.length > 0)
 }
diff --git a/test/test.js b/test/test.js
index fb9dea9..de0fa65 100644
--- a/test/test.js
+++ b/test/test.js
@@ -72,10 +72,18 @@ describe('hotkey', function () {
       setHTML(`
       <button id="button1" data-hotkey="b">Button 1</button>
       <input id="textfield" />`)
-      document.getElementById('textfield').dispatchEvent(new KeyboardEvent('keydown', {key: 'b'}))
+      document.getElementById('textfield').dispatchEvent(new KeyboardEvent('keydown', {bubbles: true, key: 'b'}))
       assert.deepEqual(elementsActivated, [])
     })
 
+    it('triggers when user is focused on a file input', function () {
+      setHTML(`
+      <button id="button1" data-hotkey="b">Button 1</button>
+      <input id="filefield" type="file" />`)
+      document.getElementById('filefield').dispatchEvent(new KeyboardEvent('keydown', {bubbles: true, key: 'b'}))
+      assert.deepEqual(elementsActivated, ['button1'])
+    })
+
     it('handles multiple keys in a hotkey combination', function () {
       setHTML('<button id="button3" data-hotkey="Control+c">Button 3</button>')
       document.dispatchEvent(new KeyboardEvent('keydown', {key: 'c', ctrlKey: true}))
@@ -113,6 +121,54 @@ describe('hotkey', function () {
       document.dispatchEvent(new KeyboardEvent('keydown', {shiftKey: true, code: 'KeyB', key: 'B'}))
       assert.notInclude(elementsActivated, 'button1')
     })
+
+    it('supports comma as a hotkey', function () {
+      setHTML('<button id="button1" data-hotkey=",">Button 1</button>')
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: ','}))
+      assert.include(elementsActivated, 'button1')
+    })
+
+    it('supports comma + modifier as a hotkey', function () {
+      setHTML('<button id="button1" data-hotkey="Meta+,">Button 1</button>')
+      document.dispatchEvent(new KeyboardEvent('keydown', {metaKey: true, key: ','}))
+      assert.include(elementsActivated, 'button1')
+    })
+
+    it('multiple comma aliases', function () {
+      setHTML('<button id="button1" data-hotkey="x,,,y">Button 1</button>')
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: ','}))
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: 'x'}))
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: 'y'}))
+      assert.equal(elementsActivated.length, 3)
+    })
+
+    it('complex comma parsing', async function () {
+      setHTML('<button id="button1" data-hotkey=", a b,c">Button 1</button>')
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: 'c'}))
+      await keySequence(', a b')
+      assert.equal(elementsActivated.length, 2)
+    })
+
+    it('complex comma parsing II', async function () {
+      setHTML('<button id="button1" data-hotkey="a , b,c,,">Button 1</button>')
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: 'c'}))
+      document.dispatchEvent(new KeyboardEvent('keydown', {key: ','}))
+      await keySequence('a , b')
+      assert.equal(elementsActivated.length, 3)
+    })
+
+    it('complex comma parsing II', async function () {
+      setHTML('<button id="button1" data-hotkey=", , , ,">Button 1</button>')
+      await keySequence(', , , ,')
+      assert.include(elementsActivated, 'button1')
+    })
+
+    it('complex comma parsing II', async function () {
+      setHTML('<button id="button1" data-hotkey="Control+x, , ,">Button 1</button>')
+      await keySequence(', ,')
+      document.dispatchEvent(new KeyboardEvent('keydown', {ctrlKey: true, key: 'x'}))
+      assert.equal(elementsActivated.length, 2)
+    })
   })
 
   describe('data-hotkey-scope', function () {
@@ -270,6 +326,12 @@ describe('hotkey', function () {
       await keySequence('d e f')
       assert.ok(fired, 'link3 did not receive a hotkey-fire event')
     })
+
+    it('supports sequences containing commas', async function () {
+      setHTML('<a id="link2" href="#" data-hotkey="b , c"></a>')
+      await keySequence('b , c')
+      assert.deepEqual(elementsActivated, ['link2'])
+    })
   })
 
   describe('misc', function () {