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update draft
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@ -118,6 +118,7 @@ echo "TORCHLIGHT_TOKEN=torch_[...]" > ./.env # [tl! .cmd]
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[^free]: Torchlight is free for sites which don't generate revenue, though it does require a link back to `torchlight.dev`. I stuck the attribution link in the footer. More pricing info [here].
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#### Installation
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I then used `npm` to install Torchlight in the root of my Hugo repo:
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```shell
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npm i @torchlight-api/torchlight-cli # [tl! .cmd]
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@ -169,7 +170,10 @@ Node.js v18.17.1
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Oh. Hmm.
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There's an [open issue](https://github.com/torchlight-api/torchlight-cli/issues/4) which reveals that the stub config file is actually located under the `src/` directory instead of `dist/`. I'll just copy that to my repo root and then set to work modifying it to suit my needs:
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There's an [open issue](https://github.com/torchlight-api/torchlight-cli/issues/4) which reveals that the stub config file is actually located under the `src/` directory instead of `dist/`.
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#### Configuration
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I'll just copy that to my repo root and then set to work modifying it to suit my needs:
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```shell
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cp node_modules/@torchlight-api/torchlight-cli/src/stubs/config.js ./torchlight.config.js # [tl! .cmd]
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@ -212,8 +216,7 @@ module.exports = {
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// If there are any diff indicators for a line, put them
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// in place of the line number to save horizontal space.
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diffIndicatorsInPlaceOfLineNumbers: true // [tl! -- focus:1]
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diffIndicatorsInPlaceOfLineNumbers: false // put the diff indicators next to the line numbers [tl! ++ reindex(-1)]
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diffIndicatorsInPlaceOfLineNumbers: true
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// When lines are collapsed, this is the text that will
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// be shown to indicate that they can be expanded.
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@ -250,6 +253,150 @@ module.exports = {
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You can find more details about the configuration options [here](https://torchlight.dev/docs/clients/cli#configuration-file).
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#### Stylization
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It's not strictly necessary for the basic functionality, but applying a little bit of extra CSS to match up with the classes leveraged by Torchlight can help to make things look a bit more polished. Fortunately for this _fake-it-til-you-make-it_ dev, Torchlight provides sample CSS that work great for this:
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- [Basic CSS](https://torchlight.dev/docs/css) for generally making things look tidy
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- [Focus CSS](https://torchlight.dev/docs/annotations/focusing#css) for that slick blur/focus effect
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- [Collapse CSS](https://torchlight.dev/docs/annotations/collapsing#required-css) for some accordion action
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Put those blocks together (along with a few minor tweaks), and here's what I started with in `assets/css/torchlight.css`:
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```css
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// torchlight! {"lineNumbers": true}
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/*********************************************
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* Basic styling for Torchlight code blocks. *
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**********************************************/
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/*
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Margin and rounding are personal preferences,
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overflow-x-auto is recommended.
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*/
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pre {
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border-radius: 0.25rem;
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margin-top: 1rem;
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margin-bottom: 1rem;
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overflow-x: auto;
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}
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/*
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Add some vertical padding and expand the width
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to fill its container. The horizontal padding
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comes at the line level so that background
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colors extend edge to edge.
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*/
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pre.torchlight {
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display: block;
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min-width: -webkit-max-content;
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min-width: -moz-max-content;
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min-width: max-content;
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padding-top: 1rem;
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padding-bottom: 1rem;
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}
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/*
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Horizontal line padding to match the vertical
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padding from the code block above.
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*/
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pre.torchlight .line {
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padding-left: 1rem;
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padding-right: 1rem;
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}
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/*
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Push the code away from the line numbers and
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summary caret indicators.
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*/
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pre.torchlight .line-number,
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pre.torchlight .summary-caret {
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margin-right: 1rem;
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}
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/*********************************************
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* Focus styling *
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**********************************************/
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/*
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Blur and dim the lines that don't have the `.line-focus` class,
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but are within a code block that contains any focus lines.
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*/
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.torchlight.has-focus-lines .line:not(.line-focus) {
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transition: filter 0.35s, opacity 0.35s;
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filter: blur(.095rem);
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opacity: .65;
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}
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/*
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When the code block is hovered, bring all the lines into focus.
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*/
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.torchlight.has-focus-lines:hover .line:not(.line-focus) {
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filter: blur(0px);
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opacity: 1;
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}
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/*********************************************
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* Collapse styling *
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**********************************************/
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.torchlight summary:focus {
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outline: none;
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}
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/* Hide the default markers, as we provide our own */
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.torchlight details > summary::marker,
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.torchlight details > summary::-webkit-details-marker {
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display: none;
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}
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.torchlight details .summary-caret::after {
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pointer-events: none;
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}
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/* Add spaces to keep everything aligned */
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.torchlight .summary-caret-empty::after,
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.torchlight details .summary-caret-middle::after,
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.torchlight details .summary-caret-end::after {
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content: " ";
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}
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/* Show a minus sign when the block is open. */
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.torchlight details[open] .summary-caret-start::after {
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content: "-";
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}
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/* And a plus sign when the block is closed. */
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.torchlight details:not([open]) .summary-caret-start::after {
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content: "+";
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}
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/* Hide the [...] indicator when open. */
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.torchlight details[open] .summary-hide-when-open {
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display: none;
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}
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/* Show the [...] indicator when closed. */
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.torchlight details:not([open]) .summary-hide-when-open {
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display: initial;
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}
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/*********************************************
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* Additional styling *
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**********************************************/
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/* Fix for disjointed horizontal scrollbars */
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.highlight div {
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overflow-x: visible;
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}
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```
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I'll make sure that this CSS gets dynamically attached to any pages with a code block by adding this to the bottom of my `layouts/partials/head.html`:
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```html
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<!-- syntax highlighting -->
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{{ if (findRE "<pre" .Content 1) }}
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{{ $syntax := resources.Get "css/torchlight.css" | minify }}
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<link href="{{ $syntax.RelPermalink }}" rel="stylesheet">
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```
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As a bit of housekeeping, I'm also going to remove the built-in highlighter configuration from my `config/_default/markup.toml` file to make sure it doesn't conflict with Torchlight:
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```toml
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# torchlight! {"lineNumbers": true}
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@ -398,5 +545,300 @@ Once that's done, I edit the `netlify.toml` file at the root of my site repo to
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Now when I `git push` new content, Netlify will use Hugo to build the site, then install and call Torchlight to `++fancy;` the code blocks before the site gets served. Very nice!
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### Hard Mode
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Of course, I Just. Can't. leave well enough alone.
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### #Goals
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Of course, I. Just. Can't. leave well enough alone, so my work here isn't finished - not by a long shot.
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You see, I'm a sucker for handy "copy" buttons attached to code blocks, and that's not something that Torchlight does (it just returns rendered HTML, remember? No fancy JavaScript here). I also wanted to add informative prompt indicators (like `$` and `#`) to code blocks representing command-line inputs (rather than script files). And I'd like to flag text returned by a command so that *only* the commands get copied, effectively ignoring the returned text, diff-removed lines, diff markers, line numbers, and prompt indicators.
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I had previously implemented a solution based *heavily* on Aaron Luna's blog post, [Hugo: Add Copy-to-Clipboard Button to Code Blocks with Vanilla JS](https://aaronluna.dev/blog/add-copy-button-to-code-blocks-hugo-chroma/). Getting that Chroma-focused solution to work well with Torchlight-formatted code blocks took some work, particularly since I'm inept at web development and can barely spell "CSS" and "JavaScrapped".
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But I[^copilot] eventually fumbled through the changes required to meet my #goals, and I'm pretty happy with the result.
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[^copilot]: With a little help from my Copilot buddy...
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#### Custom classes
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Remember Torchlight's in-line annotations that I mentioned earlier? They're pretty capable out of the box, but can also be expanded through the use of [custom classes](https://torchlight.dev/docs/annotations/classes). This makes it pretty easy to selectively apply special handling to lines of code, something that's otherwise pretty dang tricky to do with Chroma.
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So, for instance, I could add a class `.cmd` for standard user-level command-line inputs:
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```shell
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# torchlight! {"torchlightAnnotations":false}
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sudo make me a sandwich # [tl! .cmd]
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```
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```shell
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sudo make me a sandwich # [tl! .cmd]
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```
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Or `.cmd_root` for a root prompt:
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```shell
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# torchlight! {"torchlightAnnotations": false}
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wall "Make your own damn sandwich." # [tl! .cmd_root]
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```
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```shell
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wall "Make your own damn sandwich." # [tl! .cmd_root]
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```
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And for deviants:
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```powershell
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# torchlight! {"torchlightAnnotations": false}
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Write-Host -ForegroundColor Green "A taco is a sandwich" # [tl! .cmd_pwsh]
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```
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```powershell
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Write-Host -ForegroundColor Green "A taco is a sandwich" # [tl! .cmd_pwsh]
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```
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I also came up with a cleverly-named `.nocopy` class for the returned lines that shouldn't be copyable:
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```shell
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# torchlight! {"torchlightAnnotations": false}
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copy this # [tl! .cmd]
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but not this # [tl! .nocopy]
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```
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```shell
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copy this # [tl! .cmd]
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but not this # [tl! .nocopy]
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```
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So that's how I'll tie my custom classes to individual lines of code[^ranges], but I still need to actually define those classes.
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I'll drop those at the bottom of the `assets/css/torchlight.css` file I created earlier:
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```css
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// torchlight! {"lineNumbers": true}
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/* [tl! collapse:start]
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/*********************************************
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* Basic styling for Torchlight code blocks. *
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**********************************************/
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/*
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Margin and rounding are personal preferences,
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overflow-x-auto is recommended.
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*/
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pre {
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border-radius: 0.25rem;
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margin-top: 1rem;
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margin-bottom: 1rem;
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overflow-x: auto;
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}
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/*
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Add some vertical padding and expand the width
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to fill its container. The horizontal padding
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comes at the line level so that background
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colors extend edge to edge.
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*/
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pre.torchlight {
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display: block;
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min-width: -webkit-max-content;
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min-width: -moz-max-content;
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min-width: max-content;
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padding-top: 1rem;
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padding-bottom: 1rem;
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}
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/*
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Horizontal line padding to match the vertical
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padding from the code block above.
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*/
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pre.torchlight .line {
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padding-left: 1rem;
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padding-right: 1rem;
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}
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/*
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Push the code away from the line numbers and
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summary caret indicators.
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*/
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pre.torchlight .line-number,
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pre.torchlight .summary-caret {
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margin-right: 1rem;
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}
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/*********************************************
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* Focus styling *
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**********************************************/
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/*
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Blur and dim the lines that don't have the `.line-focus` class,
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but are within a code block that contains any focus lines.
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*/
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.torchlight.has-focus-lines .line:not(.line-focus) {
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transition: filter 0.35s, opacity 0.35s;
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filter: blur(.095rem);
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opacity: .65;
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}
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/*
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When the code block is hovered, bring all the lines into focus.
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*/
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.torchlight.has-focus-lines:hover .line:not(.line-focus) {
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filter: blur(0px);
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opacity: 1;
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}
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/*********************************************
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* Collapse styling *
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**********************************************/
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.torchlight summary:focus {
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outline: none;
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}
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/* Hide the default markers, as we provide our own */
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.torchlight details > summary::marker,
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.torchlight details > summary::-webkit-details-marker {
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display: none;
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}
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.torchlight details .summary-caret::after {
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pointer-events: none;
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}
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/* Add spaces to keep everything aligned */
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.torchlight .summary-caret-empty::after,
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.torchlight details .summary-caret-middle::after,
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.torchlight details .summary-caret-end::after {
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content: " ";
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}
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/* Show a minus sign when the block is open. */
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.torchlight details[open] .summary-caret-start::after {
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content: "-";
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}
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/* And a plus sign when the block is closed. */
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.torchlight details:not([open]) .summary-caret-start::after {
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content: "+";
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}
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/* Hide the [...] indicator when open. */
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.torchlight details[open] .summary-hide-when-open {
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display: none;
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}
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/* Show the [...] indicator when closed. */
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.torchlight details:not([open]) .summary-hide-when-open {
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display: initial;
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} /* [tl! collapse:end]
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/*********************************************
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* Additional styling *
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**********************************************/
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/* Fix for disjointed horizontal scrollbars */
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.highlight div {
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overflow-x: visible;
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}
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/* [tl! focus:start]
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Insert prompt indicators on interactive shells.
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*/
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.cmd::before {
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color: var(--base07);
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content: "$ ";
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}
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.cmd_root::before {
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color: var(--base08);
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content: "# ";
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}
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.cmd_pwsh::before {
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color: var(--base07);
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content: "PS> ";
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}
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/*
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Don't copy shell outputs
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*/
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.nocopy {
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webkit-user-select: none;
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user-select: none;
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} /* [tl! focus:end]
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```
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[^ranges]: Or ranges of lines, using the same syntax as before: `[tl! .nocopy:5]` will make this line and the following five uncopyable.
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The `.cmd` classes will just insert the respective prompt _before_ each flagged line, and the `.nocopy` class will make it it so that the lines aren't selectable. Now for the tricky part...
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#### Copy that blocky
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There are two major pieces for the code-copy wizardry: the CSS to style/arrange the copy button and language label, and the JavaScript to make it work.
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I put the CSS in `assets/css/code-copy-button.css`. It's basically straight from Aaron's post but with a few stanzas removed, a few elements renamed, and a few values tweaked to fit this site:
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```css
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// torchlight! {"lineNumbers": true}
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/* adapted from https://aaronluna.dev/blog/add-copy-button-to-code-blocks-hugo-chroma/ */
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.highlight-wrapper /* already set by torchlight.css [tl! remove:3] */
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display: block;
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}
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/* [tl! reindex(-4)] */
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.highlight {
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position: relative;
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z-index: 0;
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padding: 0;
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margin: 0; /* [tl! remove] */
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margin: 40px 0 10px 0; /* a little more breathing room [tl! reindex(-1)] */
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border-radius: 4px;
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}
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||||
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.highlight > .chroma { /* chroma-specific [tl! remove:start] */
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color: #d0d0d0;
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background-color: #212121;
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position: static;
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||||
z-index: 1;
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||||
border-radius: 4px;
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||||
padding: 10px;
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}
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||||
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.chroma .lntd:first-child {
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padding: 7px 7px 7px 10px;
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margin: 0;
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}
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.chroma .lntd:last-child {
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padding: 7px 10px 7px 7px;
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margin: 0;
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}
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/* [tl! remove:end] */
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.copy-code-button { /* [tl! reindex(-19)] */
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position: absolute;
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z-index: 2;
|
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right: 0;
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||||
top: 0; /* [tl! remove] */
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||||
top: -29px; /* put the button above the code block instead of in it [tl! reindex(-1)] */
|
||||
font-size: 13px;
|
||||
font-weight: 700;
|
||||
line-height: 14px;
|
||||
letter-spacing: 0.5px;
|
||||
width: 65px;
|
||||
color: #232326;
|
||||
background-color: #7f7f7f;
|
||||
border: 1.25px solid #232326;
|
||||
border-top-left-radius: 0;
|
||||
border-top-right-radius: 4px;
|
||||
border-bottom-right-radius: 0;
|
||||
border-bottom-left-radius: 4px;
|
||||
white-space: nowrap;
|
||||
padding: 4px 4px 5px 4px;
|
||||
margin: 0 0 0 1px;
|
||||
cursor: pointer;
|
||||
opacity: 0.6;
|
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}
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||||
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||||
.copy-code-button:hover,
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.copy-code-button:focus,
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.copy-code-button:active,
|
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.copy-code-button:active:hover {
|
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color: #222225;
|
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background-color: #b3b3b3;
|
||||
opacity: 0.8;
|
||||
}
|
||||
|
||||
.copyable-text-area {
|
||||
position: absolute;
|
||||
height: 0;
|
||||
z-index: -1;
|
||||
opacity: .01;
|
||||
}
|
||||
|
||||
```
|
||||
Loading…
Reference in a new issue