vim-patch:7.4.672

Problem:    When completing a shell command, directories in the current
            directory are not listed.
Solution:   When "." is not in $PATH also look in the current directory for
            directories.

b5971141df

Most of it applied manually.

src/nvim/eval.c

@@ -8692,7 +8692,11 @@ static void f_eventhandler(typval_T *argvars, typval_T *rettv)
  */
 static void f_executable(typval_T *argvars, typval_T *rettv)
 {
-  rettv->vval.v_number = os_can_exe(get_tv_string(&argvars[0]), NULL);
+  char_u *name = get_tv_string(&argvars[0]);
+
+  // Check in $PATH and also check directly if there is a directory name
+  rettv->vval.v_number = os_can_exe(name, NULL, true)
+           || (gettail_dir(name) != name && os_can_exe(name, NULL, false));
 }
 
 /// "exepath()" function
@@ -8701,7 +8705,7 @@ static void f_exepath(typval_T *argvars, typval_T *rettv)
   char_u *arg = get_tv_string(&argvars[0]);
   char_u *path = NULL;
 
-  (void)os_can_exe(arg, &path);
+  (void)os_can_exe(arg, &path, true);
 
   rettv->v_type = VAR_STRING;
   rettv->vval.v_string = path;
@@ -11606,7 +11610,7 @@ static char **tv_to_argv(typval_T *cmd_tv, char **cmd)
   assert(argl->lv_first);
 
   const char_u *exe = get_tv_string_chk(&argl->lv_first->li_tv);
-  if (!exe || !os_can_exe(exe, NULL)) {
+  if (!exe || !os_can_exe(exe, NULL, true)) {
     // String is not executable
     if (exe) {
       EMSG2(e_jobexe, exe);

src/nvim/ex_getln.c

@@ -3983,6 +3983,7 @@ static void expand_shellcmd(char_u *filepat, int *num_file, char_u ***file,
   char_u      *s, *e;
   int flags = flagsarg;
   int ret;
+  bool did_curdir = false;
 
   /* for ":set path=" and ":set tags=" halve backslashes for escaped
    * space */
@@ -3991,7 +3992,7 @@ static void expand_shellcmd(char_u *filepat, int *num_file, char_u ***file,
     if (pat[i] == '\\' && pat[i + 1] == ' ')
       STRMOVE(pat + i, pat + i + 1);
 
-  flags |= EW_FILE | EW_EXEC;
+  flags |= EW_FILE | EW_EXEC | EW_SHELLCMD;
 
   bool mustfree = false;  // Track memory allocation for *path.
   /* For an absolute name we don't use $PATH. */
@@ -4011,10 +4012,23 @@ static void expand_shellcmd(char_u *filepat, int *num_file, char_u ***file,
 
   /*
    * Go over all directories in $PATH.  Expand matches in that directory and
-   * collect them in "ga".
+   * collect them in "ga". When "." is not in $PATH also expaned for the
+   * current directory, to find "subdir/cmd".
    */
   ga_init(&ga, (int)sizeof(char *), 10);
-  for (s = path; *s != NUL; s = e) {
+  for (s = path; ; s = e) {
+    if (*s == NUL)
+	{
+	    if (did_curdir) {
+		  break;
+        }
+	    // Find directories in the current directory, path is empty.
+	    did_curdir = true;
+	}
+	else if (*s == '.') {
+	    did_curdir = true;
+    }
+
     if (*s == ' ')
       ++s;              /* Skip space used for absolute path name. */
 

src/nvim/os/fs.c

@@ -164,6 +164,7 @@ int os_nodetype(const char *name)
 ///
 /// @param[in]  name     Name of the executable.
 /// @param[out] abspath  Path of the executable, if found and not `NULL`.
+/// @param[in] use_path  If 'false', only check if "name" is executable
 ///
 /// @return `true` if `name` is executable and
 ///   - can be found in $PATH,
@@ -171,15 +172,18 @@ int os_nodetype(const char *name)
 ///   - is absolute.
 ///
 /// @return `false` otherwise.
-bool os_can_exe(const char_u *name, char_u **abspath)
+bool os_can_exe(const char_u *name, char_u **abspath, bool use_path)
   FUNC_ATTR_NONNULL_ARG(1)
 {
-  // If it's an absolute or relative path don't need to use $PATH.
-  if (path_is_absolute_path(name)
+  // when use_path is false or if it's an absolute or relative path don't
+  // need to use $PATH.
+  if (!use_path || path_is_absolute_path(name)
       || (name[0] == '.'
           && (name[1] == '/'
               || (name[1] == '.' && name[2] == '/')))) {
-    if (is_executable(name)) {
+    // There must be a path separator, files in the current directory
+    // can't be executed
+    if (gettail_dir(name) != name && is_executable(name)) {
       if (abspath != NULL) {
         *abspath = save_absolute_path(name);
       }

src/nvim/os_unix.c

@@ -577,7 +577,8 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
       continue;
 
     /* Skip files that are not executable if we check for that. */
-    if (!dir && (flags & EW_EXEC) && !os_can_exe((*file)[i], NULL))
+    if (!dir && (flags & EW_EXEC)
+        && !os_can_exe((*file)[i], NULL, !(flags & EW_SHELLCMD)))
       continue;
 
     p = xmalloc(STRLEN((*file)[i]) + 1 + dir);

src/nvim/path.c

@@ -981,12 +981,12 @@ static void uniquefy_paths(garray_T *gap, char_u *pattern)
  * "/path/file", "/path/dir/", "/path//dir", "/file"
  *	 ^	       ^	     ^	      ^
  */
-static char_u *gettail_dir(char_u *fname)
+char_u *gettail_dir(const char_u *fname)
 {
-  char_u      *dir_end = fname;
-  char_u      *next_dir_end = fname;
+  const char_u      *dir_end = fname;
+  const char_u      *next_dir_end = fname;
   bool look_for_sep = true;
-  char_u      *p;
+  const char_u      *p;
 
   for (p = fname; *p != NUL; ) {
     if (vim_ispathsep(*p)) {
@@ -1001,7 +1001,7 @@ static char_u *gettail_dir(char_u *fname)
     }
     mb_ptr_adv(p);
   }
-  return dir_end;
+  return (char_u *)dir_end;
 }
 
 
@@ -1318,8 +1318,10 @@ void addfile(
   if ((isdir && !(flags & EW_DIR)) || (!isdir && !(flags & EW_FILE)))
     return;
 
-  /* If the file isn't executable, may not add it.  Do accept directories. */
-  if (!isdir && (flags & EW_EXEC) && !os_can_exe(f, NULL))
+  // If the file isn't executable, may not add it.  Do accept directories.
+  // When invoked from expand_shellcmd() do not use $PATH.
+  if (!isdir && (flags & EW_EXEC)
+      && !os_can_exe(f, NULL, !(flags & EW_SHELLCMD)))
     return;
 
   char_u *p = xmalloc(STRLEN(f) + 1 + isdir);

src/nvim/path.h

@@ -21,6 +21,8 @@
 /* Note: mostly EW_NOTFOUND and EW_SILENT are mutually exclusive: EW_NOTFOUND
 * is used when executing commands and EW_SILENT for interactive expanding. */
 #define EW_ALLLINKS     0x1000  // also links not pointing to existing file
+#define EW_SHELLCMD     0x2000  // called from expand_shellcmd(), don't check
+ 				                //  if executable is in $PATH
 #define EW_DODOT        0x4000  // also files starting with a dot
 #define EW_EMPTYOK      0x8000  // no matches is not an error
 

src/nvim/version.c

@@ -1006,7 +1006,7 @@ static int included_patches[] = {
   675,
   // 674 NA
   673,
-  // 672,
+  672,
   671,
   670,
   // 669 NA

test/unit/os/fs_spec.lua

@@ -148,7 +148,7 @@ describe('fs function', function()
     local function os_can_exe(name)
       local buf = ffi.new('char *[1]')
       buf[0] = NULL
-      local ok = fs.os_can_exe(to_cstr(name), buf)
+      local ok = fs.os_can_exe(to_cstr(name), buf, true)
 
       -- When os_can_exe returns true, it must set the path.
       -- When it returns false, the path must be NULL.