patch 9.0.1400: find_file_in_path() is not reentrant
Problem: find_file_in_path() is not reentrant.
Solution: Instead of global variables pass pointers to the functions.
(closes #12093)
diff --git a/src/proto/findfile.pro b/src/proto/findfile.pro
index bffc124..9560101 100644
--- a/src/proto/findfile.pro
+++ b/src/proto/findfile.pro
@@ -3,10 +3,10 @@
char_u *vim_findfile_stopdir(char_u *buf);
void vim_findfile_cleanup(void *ctx);
char_u *vim_findfile(void *search_ctx_arg);
-char_u *find_file_in_path(char_u *ptr, int len, int options, int first, char_u *rel_fname);
+char_u *find_file_in_path(char_u *ptr, int len, int options, int first, char_u *rel_fname, char_u **file_to_find, char **search_ctx);
void free_findfile(void);
-char_u *find_directory_in_path(char_u *ptr, int len, int options, char_u *rel_fname);
-char_u *find_file_in_path_option(char_u *ptr, int len, int options, int first, char_u *path_option, int find_what, char_u *rel_fname, char_u *suffixes);
+char_u *find_directory_in_path(char_u *ptr, int len, int options, char_u *rel_fname, char_u **file_to_find, char **search_ctx);
+char_u *find_file_in_path_option(char_u *ptr, int len, int options, int first, char_u *path_option, int find_what, char_u *rel_fname, char_u *suffixes, char_u **file_to_find, char **search_ctx_arg);
char_u *grab_file_name(long count, linenr_T *file_lnum);
char_u *file_name_at_cursor(int options, long count, linenr_T *file_lnum);
char_u *file_name_in_line(char_u *line, int col, int options, long count, char_u *rel_fname, linenr_T *file_lnum);