How to find out which .c file contains the .c functions of R internals, on Windows?

Question

I want to view the source code of R\'s match.call function. As it is an internal function, I downloaded the R source code, went to ./src/main/names.c and looked

Answer 1

Don't download a utility for a one time file content search. You can use findstr. It isn't suitable for a full file system search, but I think it's perfect for what you are trying to do.

1. run the command shell

cmd

2. go to the directory (if you are not sure what the path is, find it in explorer than view the full path by clicking in the address bar) You can copy/paste that directory.
   If the path is C:\Users\jsmith\documents\projects\happy\src\main

cd C:\Users\jsmith\documents\projects\happy\src\main

3. use findstr

findstr do_matchcall

if you want to search sub directories

findstr /s do_matchcall

if only want to know the filename

findstr /m do_matchcall

if you want to send the results to another file

findstr /s /m do__matchcall >searchresult.txt

if you want the line numbers

findstr /n do_matchcall

Findstr also supports regular expressions. To see all the options

findstr /?