add a test

src/view/com/composer/text-input/web/Tags/__tests__/utils.test.ts

@@ -0,0 +1,80 @@
+import {describe, it, expect} from '@jest/globals'
+
+import {findSuggestionMatch, parsePunctuationFromTag} from '../utils'
+
+describe('findSuggestionMatch', () => {
+  it(`finds tag`, () => {
+    const match = findSuggestionMatch({
+      text: 'a #tag',
+      cursorPosition: 6,
+    })
+
+    expect(match).toEqual({
+      range: {
+        from: 2,
+        to: 6,
+      },
+      query: 'tag',
+      text: ' #tag',
+    })
+  })
+
+  it(`validates tag length`, () => {
+    expect(
+      findSuggestionMatch({
+        text: '#xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
+        cursorPosition: 65,
+      }),
+    ).toEqual({
+      range: {
+        from: 0,
+        to: 65,
+      },
+      query: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
+      text: '#xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
+    })
+
+    expect(
+      findSuggestionMatch({
+        text: '#xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxo',
+        cursorPosition: 66,
+      }),
+    ).toEqual(null)
+  })
+
+  it(`reports tag with trailing punctuation`, () => {
+    const match = findSuggestionMatch({
+      text: '#tag!!!',
+      cursorPosition: 7,
+    })
+
+    expect(match).toEqual({
+      range: {
+        from: 0,
+        to: 7,
+      },
+      query: 'tag!!!',
+      text: '#tag!!!',
+    })
+  })
+})
+
+describe('parsePunctuationFromTag', () => {
+  it(`parses with punctuation`, () => {
+    expect(parsePunctuationFromTag('tag!')).toEqual({
+      tag: 'tag',
+      punctuation: '!',
+    })
+    expect(parsePunctuationFromTag('tag!!!')).toEqual({
+      tag: 'tag',
+      punctuation: '!!!',
+    })
+  })
+
+  it(`parses without punctuation`, () => {
+    expect(parsePunctuationFromTag('tag')).toEqual({
+      tag: 'tag',
+      punctuation: '',
+    })
+  })
+})

src/view/com/composer/text-input/web/Tags/plugin.tsx

@@ -5,6 +5,8 @@ import {Node as ProseMirrorNode} from '@tiptap/pm/model'
 import {PluginKey} from '@tiptap/pm/state'
 import Suggestion, {SuggestionOptions} from '@estrattonbailey/tiptap-suggestion'
 
+import {findSuggestionMatch} from './utils'
+
 export type TagOptions = {
   HTMLAttributes: Record<string, any>
   renderLabel: (props: {options: TagOptions; node: ProseMirrorNode}) => string
@@ -64,55 +66,13 @@ export const Tags = Node.create<TagOptions>({
         },
         findSuggestionMatch({$position}) {
           const text = $position.nodeBefore?.isText && $position.nodeBefore.text
+          const cursorPosition = $position.pos
 
           if (!text) {
             return null
           }
 
-          const regex = /(?:^|\s)(#[^\d\s]\S*)(?=\s)?/g
-          const puncRegex = /\p{P}+$/gu
-          const match = Array.from(text.matchAll(regex)).pop()
-
-          if (
-            !match ||
-            match.input === undefined ||
-            match.index === undefined
-          ) {
-            return null
-          }
-
-          const cursorPosition = $position.pos
-          const startIndex = cursorPosition - text.length
-          let [matchedString, tag] = match
-
-          const sanitized = tag.replace(puncRegex, '').replace(/^#/, '')
-
-          // one of our hashtag spec rules
-          if (sanitized.length > 64) return null
-
-          const from = startIndex + match.index + matchedString.indexOf(tag)
-          const to = from + tag.length
-
-          if (from < cursorPosition && to >= cursorPosition) {
-            return {
-              range: {
-                from,
-                to,
-              },
-              /**
-               * This is passed to the `items({ query })` method configured in
-               * `createTagsAutocomplete`.
-               *
-               * We parse out the punctuation later, but we don't want to pass
-               * the # to the search query.
-               */
-              query: tag.replace(/^#/, ''),
-              // raw text string
-              text: matchedString,
-            }
-          }
-
-          return null
+          return findSuggestionMatch({text, cursorPosition})
         },
       },
     }

src/view/com/composer/text-input/web/Tags/utils.ts

@@ -0,0 +1,55 @@
+export function parsePunctuationFromTag(value: string) {
+  const reg = /(\p{P}+)$/gu
+  const tag = value.replace(reg, '')
+  const punctuation = value.match(reg)?.[0] || ''
+
+  return {tag, punctuation}
+}
+
+export function findSuggestionMatch({
+  text,
+  cursorPosition,
+}: {
+  text: string
+  cursorPosition: number
+}) {
+  const regex = /(?:^|\s)(#[^\d\s]\S*)(?=\s)?/g
+  const puncRegex = /\p{P}+$/gu
+  const match = Array.from(text.matchAll(regex)).pop()
+
+  if (!match || match.input === undefined || match.index === undefined) {
+    return null
+  }
+
+  const startIndex = cursorPosition - text.length
+  let [matchedString, tag] = match
+
+  const sanitized = tag.replace(puncRegex, '').replace(/^#/, '')
+
+  // one of our hashtag spec rules
+  if (sanitized.length > 64) return null
+
+  const from = startIndex + match.index + matchedString.indexOf(tag)
+  const to = from + tag.length
+
+  if (from < cursorPosition && to >= cursorPosition) {
+    return {
+      range: {
+        from,
+        to,
+      },
+      /**
+       * This is passed to the `items({ query })` method configured in
+       * `createTagsAutocomplete`.
+       *
+       * We parse out the punctuation later, but we don't want to pass
+       * the # to the search query.
+       */
+      query: tag.replace(/^#/, ''),
+      // raw text string
+      text: matchedString,
+    }
+  }
+
+  return null
+}

src/view/com/composer/text-input/web/Tags/view.tsx

@@ -12,6 +12,8 @@ import {TagsAutocompleteModel} from 'state/models/ui/tags-autocomplete'
 import {usePalette} from 'lib/hooks/usePalette'
 import {Text} from 'view/com/util/text/Text'
 
+import {parsePunctuationFromTag} from './utils'
+
 type AutocompleteResult = string
 type ListProps = SuggestionProps<AutocompleteResult> & {
   autocompleteModel: TagsAutocompleteModel
@@ -99,8 +101,7 @@ const Autocomplete = forwardRef<AutocompleteRef, ListProps>(
 
     const commit = React.useCallback(
       (query: string) => {
-        const tag = query.replace(/(\p{P}+)$/gu, '')
-        const punctuation = query.match(/(\p{P}+)$/gu)?.[0] || ''
+        const {tag, punctuation} = parsePunctuationFromTag(query)
         /*
          * This values here are passed directly to the `command` method
          * configured in the `Tags` plugin.