Add sub and sup Markdown tags.

diff --git a/docs/src/about_guide.md b/docs/src/about_guide.md
index 6f709b580d11e8189814020cc460b48a5455ad27..5422478e59ac53d6a1b688eb2e71b62e9ac9c5aa 100644 (file)
--- a/docs/src/about_guide.md
+++ b/docs/src/about_guide.md
@@ -35,6 +35,8 @@ Horizontal Rule <br>\--- | Horizontal Rule<br>\*\*\* | Horizontal Rule  <br><hr>
 \`Inline code\` with backticks | |`Inline code` with backticks 
 \`\`\`<br>\# code block <br>print '3 backticks or'<br>print 'indent 4 spaces' <br>\`\`\` | ····\# code block<br>····print '3 backticks or'<br>····print 'indent 4 spaces' | \# code block <br>print '3 backticks or'<br>print 'indent 4 spaces'
 ::: spoiler hidden or nsfw stuff<br>*a bunch of spoilers here*<br>::: | | <details><summary> hidden or nsfw stuff </summary><p><em>a bunch of spoilers here</em></p></details>
+Some ~subscript~ text | | Some <sub>subscript</sub> text
+Some ^superscript^ text | | ome <sup>superscript</sup> text
 
 [CommonMark Tutorial](https://commonmark.org/help/tutorial/)
 

diff --git a/ui/package.json b/ui/package.json
index 1bd07e86378a1eeb5d6ee54d36f500ded3d8c412..f59b86255c0c0839e841e738f62bb19b02539107 100644 (file)
--- a/ui/package.json
+++ b/ui/package.json
@@ -37,6 +37,8 @@
     "markdown-it": "^10.0.0",
     "markdown-it-container": "^2.0.0",
     "markdown-it-emoji": "^1.4.0",
+    "markdown-it-sub": "^1.0.0",
+    "markdown-it-sup": "^1.0.0",
     "moment": "^2.24.0",
     "node-fetch": "^2.6.0",
     "prettier": "^2.0.4",

diff --git a/ui/src/components/markdown-textarea.tsx b/ui/src/components/markdown-textarea.tsx
index 2f6d0a7ecd03a0f15ae1796ac8b2d057241605cf..04838b2c8cee838f57712d22b483ab672e200f7a 100644 (file)
--- a/ui/src/components/markdown-textarea.tsx
+++ b/ui/src/components/markdown-textarea.tsx
@@ -469,6 +469,16 @@ export class MarkdownTextArea extends Component<
     i.simpleInsert('#');
   }
 
+  handleInsertSubscript(i: MarkdownTextArea, event: any) {
+    event.preventDefault();
+    i.simpleInsert('~');
+  }
+
+  handleInsertSuperscript(i: MarkdownTextArea, event: any) {
+    event.preventDefault();
+    i.simpleInsert('^');
+  }
+
   simpleInsert(chars: string) {
     if (!this.state.content) {
       this.state.content = `${chars} `;

diff --git a/ui/src/utils.ts b/ui/src/utils.ts
index 960477650d084981eedd56436b5344b5c6573086..892516bff2a5cf8946e32c828f8892f6a0edd652 100644 (file)
--- a/ui/src/utils.ts
+++ b/ui/src/utils.ts
@@ -49,6 +49,8 @@ import { UserService, WebSocketService } from './services';
 
 import Tribute from 'tributejs/src/Tribute.js';
 import markdown_it from 'markdown-it';
+import markdown_it_sub from 'markdown-it-sub';
+import markdown_it_sup from 'markdown-it-sup';
 import markdownitEmoji from 'markdown-it-emoji/light';
 import markdown_it_container from 'markdown-it-container';
 import emojiShortName from 'emoji-short-name';
@@ -148,6 +150,8 @@ export const md = new markdown_it({
   linkify: true,
   typographer: true,
 })
+  .use(markdown_it_sub)
+  .use(markdown_it_sup)
   .use(markdown_it_container, 'spoiler', {
     validate: function (params: any) {
       return params.trim().match(/^spoiler\s+(.*)$/);

diff --git a/ui/yarn.lock b/ui/yarn.lock
index c39f1dc4b058e3c83f1b87b19f2bd2eea4b5d840..ad77fffd7d948a68e21929cf1e8d8ad97180b0f0 100644 (file)
--- a/ui/yarn.lock
+++ b/ui/yarn.lock
@@ -4317,6 +4317,16 @@ markdown-it-emoji@^1.4.0:
   resolved "https://registry.yarnpkg.com/markdown-it-emoji/-/markdown-it-emoji-1.4.0.tgz#9bee0e9a990a963ba96df6980c4fddb05dfb4dcc"
   integrity sha1-m+4OmpkKljupbfaYDE/dsF37Tcw=
 
+markdown-it-sub@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/markdown-it-sub/-/markdown-it-sub-1.0.0.tgz#375fd6026eae7ddcb012497f6411195ea1e3afe8"
+  integrity sha1-N1/WAm6ufdywEkl/ZBEZXqHjr+g=
+
+markdown-it-sup@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/markdown-it-sup/-/markdown-it-sup-1.0.0.tgz#cb9c9ff91a5255ac08f3fd3d63286e15df0a1fc3"
+  integrity sha1-y5yf+RpSVawI8/09YyhuFd8KH8M=
+
 markdown-it@^10.0.0:
   version "10.0.0"
   resolved "https://registry.yarnpkg.com/markdown-it/-/markdown-it-10.0.0.tgz#abfc64f141b1722d663402044e43927f1f50a8dc"