GoogleDocs搜索和替换中的正则表达式

Question

I want to replace all first "/" with "[" but all second "/" with "]". GoogleDocs offers a regular expression search-and-replace, but I have no clue how to use that for this "first and second" issue. Example of source and target below.

What do I have to enter in the Search and Replace fields of GoogleDocs dialogue?

current state

p pen /pen/
b bad /bæd/
t tea /tiː/

intended solution

p pen [pen]
b bad [bæd]
t tea [tiː]

Answer 1

In Google Sheets you can use capture groups so you could do something like Find: /(.*)/ Replace with: [$1]

Docs does not support this functionality so you may have to move your stuff around a little.