Make FPC_* defines an enum type in path.h.

src/path.c

@@ -29,20 +29,10 @@
 #define URL_SLASH       1               /* path_is_url() has found "://" */
 #define URL_BACKSLASH   2               /* path_is_url() has found ":\\" */
 
-/*
- * Compare two file names and return:
- * FPC_SAME   if they both exist and are the same file.
- * FPC_SAMEX  if they both don't exist and have the same file name.
- * FPC_DIFF   if they both exist and are different files.
- * FPC_NOTX   if they both don't exist.
- * FPC_DIFFX  if one of them doesn't exist.
- * For the first name environment variables are expanded
- */
-int 
-fullpathcmp (
+FileComparison fullpathcmp (
     char_u *s1,
     char_u *s2,
-    int checkname                  /* when both don't exist, check file names */
+    int checkname
 )
 {
 #ifdef UNIX

src/path.h

@@ -1,5 +1,24 @@
 #ifndef NEOVIM_PATH_H
 #define NEOVIM_PATH_H
+
+/// Return value for the comparison of two files. Also @see fullpathcmp.
+typedef enum file_comparison {
+  FPC_SAME = 1,   ///< Both exist and are the same file.
+  FPC_DIFF = 2,   ///< Both exist and are different files.
+  FPC_NOTX = 4,   ///< Both don't exist.
+  FPC_DIFFX = 6,  ///< One of them doesn't exist.
+  FPC_SAMEX = 7   ///< Both don't exist and file names are same.
+} FileComparison;
+
+/// Compare two file names.
+///
+/// @param s1 First file name. Environment variables in this name will be
+///   expanded.
+/// @param s2 Second file name.
+/// @param checkname When both files don't exist, only compare their names.
+/// @return Enum of type FileComparison. @see FileComparison.
+FileComparison fullpathcmp(char_u *s1, char_u *s2, int checkname);
+
 int vim_ispathsep(int c);
 int vim_ispathsep_nocolon(int c);
 int vim_ispathlistsep(int c);
@@ -14,7 +33,6 @@ int gen_expand_wildcards(int num_pat, char_u **pat, int *num_file,
                          char_u ***file,
                          int flags);
 void addfile(garray_T *gap, char_u *f, int flags);
-int fullpathcmp(char_u *s1, char_u *s2, int checkname);
 char_u *gettail(char_u *fname);
 char_u *gettail_sep(char_u *fname);
 char_u *getnextcomp(char_u *fname);

src/vim.h

@@ -537,14 +537,6 @@ enum {
 # define REX_SET        1       /* to allow \z\(...\), */
 # define REX_USE        2       /* to allow \z\1 et al. */
 
-/* Return values for fullpathcmp() */
-/* Note: can use (fullpathcmp() & FPC_SAME) to check for equal files */
-#define FPC_SAME        1       /* both exist and are the same file. */
-#define FPC_DIFF        2       /* both exist and are different files. */
-#define FPC_NOTX        4       /* both don't exist. */
-#define FPC_DIFFX       6       /* one of them doesn't exist. */
-#define FPC_SAMEX       7       /* both don't exist and file names are same. */
-
 /* flags for do_ecmd() */
 #define ECMD_HIDE       0x01    /* don't free the current buffer */
 #define ECMD_SET_HELP   0x02    /* set b_help flag of (new) buffer before

test/unit/path.moon

@@ -1,26 +1,24 @@
 {:cimport, :internalize, :eq, :ffi, :lib, :cstr, :to_cstr} = require 'test.unit.helpers'
 
---misc1 = cimport './src/misc1.h'
+path = lib
 
--- remove these statements once 'cimport' is working properly for misc1.h
-misc1 = lib
 ffi.cdef [[
-enum FPC {
+typedef enum file_comparison {
   FPC_SAME = 1, FPC_DIFF = 2, FPC_NOTX = 4, FPC_DIFFX = 6, FPC_SAMEX = 7
-};
-int fullpathcmp(char_u *s1, char_u *s2, int checkname);
+} FileComparison;
+FileComparison fullpathcmp(char_u *s1, char_u *s2, int checkname);
 ]]
 
 -- import constants parsed by ffi
-{:FPC_SAME, :FPC_DIFF, :FPC_NOTX, :FPC_DIFFX, :FPC_SAMEX} = lib
+{:FPC_SAME, :FPC_DIFF, :FPC_NOTX, :FPC_DIFFX, :FPC_SAMEX} = path
 
-describe 'misc1 function', ->
+describe 'path function', ->
   describe 'fullpathcmp', ->
 
     fullpathcmp = (s1, s2, cn) ->
       s1 = to_cstr s1
       s2 = to_cstr s2
-      misc1.fullpathcmp s1, s2, cn or 0
+      path.fullpathcmp s1, s2, cn or 0
 
     f1 = 'f1.o'
     f2 = 'f2.o'