patch 8.1.1979: code for handling file names is spread out
Problem: Code for handling file names is spread out.
Solution: Move code to new filepath.c file. Graduate FEAT_MODIFY_FNAME.
diff --git a/src/README.md b/src/README.md
index 0b6a311..dcc7a5c 100644
--- a/src/README.md
+++ b/src/README.md
@@ -36,6 +36,7 @@
evalfunc.c | built-in functions
evalvars.c | vim variables
fileio.c | reading and writing files
+filepath.c | dealing with file names and paths
findfile.c | search for files in 'path'
fold.c | folding
getchar.c | getting characters and key mapping