slash-anywhere

1import type { Register } from 'claude-code'
2
3const MAX_ROWS = 20
4
5export const register: Register = on => {
6  on('prompt.autocomplete', { token: /^\// }, async ($, e, next) => {
7    const base = await next(e)
8    const isLeading = e.start === 0
9    // Text anywhere after the cursor, on this line or a later one.
10    const hasTextAfter = /\S/.test(e.text.slice(e.cursor))
11
12    // The engine already completes a leading `/word` with nothing after it.
13    if (!isLeading || !hasTextAfter) return base
14
15    // Only a word glued to the cursor needs a space; whitespace already there stays.
16    const sep = /\S/.test(e.text[e.cursor] ?? '') ? ' ' : ''
17    const typed = e.token.slice(1).toLowerCase()
18    const seen = new Set<string>()
19    const rows = (await $.command.list())
20      .filter(c => {
21        // A plugin skill matches on its bare name too: `/deploy` finds `p:deploy`.
22        const bare = c.name.slice(c.name.lastIndexOf(':') + 1)
23        const isMatch =
24          c.name.toLowerCase().startsWith(typed) ||
25          bare.toLowerCase().startsWith(typed)
26
27        if (!isMatch || seen.has(c.name)) return false
28        seen.add(c.name)
29        return true
30      })
31      .slice(0, MAX_ROWS)
32      .map(c => ({
33        text: `/${c.name}${sep}`,
34        label: `/${c.name}`,
35        description: c.description,
36      }))
37
38    return { suggestions: [...base.suggestions, ...rows] }
39  })
40}
41