find patterns in a file within quotes in r

You can use regular expressions to find patterns within quotes in a file in R. Here's an example code snippet that you can use:

# read file as a single long string
file_content <- paste(readLines("file.txt"), collapse = " ")

# match patterns within quotes
quotes_matched <- gregexpr("\".*?\"", file_content)

# extract matched patterns
matched_strings <- regmatches(file_content, quotes_matched)

# print matched strings
cat(matched_strings)
315 chars
12 lines

This code reads a file as a single long string, and then matches all occurrences of patterns within quotes using regular expressions. It then extracts the matched patterns and prints them. Note that .*? inside the quotes in the regular expression is a non-greedy match, which means that it'll match the smallest possible pattern within quotes.