How to replace all spaces with tabs?

[kylehelp123]

I wrote a program that reads a file and adds a number everytime the file has a tab. I want to make it so any spaces in the file turn into a tab and continues to add a number to the file. I can provide the program if needed, any help is greatly appreciated, thank you

[altenbach · Accepted solution]

Read the entire file as a string, use "search and replace string" with the desired characters as inputs (and using replace all=true), write it back to the file.