Replacing a string in Sublime

Question

I'd like to replace this y[100] with this Ith(y,100) in Sublime3. I've got the regular expression \by[\d+] in find what and Ith(y,$1) in replace with, but it doesn't work. It finds what to replace correctly but just replaces it with Ith(y, )

Answer 1

You need to pick the \d+ inside () to capture in group($1)

\by[(\d+)]

Also, you may need to to escape the [ and ] characters here.

\by\[(\d+)\]

Answer 2

You have to capture the data you want to backreference: to do that you have to use unescaped parenthesis (...), ie capturing groups. Also, [...] are character classes, a special character in regex that you need to escape.

Try replacing

\by\[(\d+)\]

with

Ith(y, \1)

Answer 3

You need to escape the special characters and capture the number in a capturing group group. Try this regex:

\by\[(\d+)]\b

And replace with

Ith(y, $1)

Online explanation and demonstration: http://regex101.com/r/nX3yJ9