vim-patch:8.0.1554: custom plugins loaded with --clean

Problem:    Custom plugins loaded with --clean.
Solution:   Do not include the home directory in 'runtimepath'.
0726870326

src/nvim/main.h

@@ -4,8 +4,42 @@
 #include "nvim/normal.h"
 #include "nvim/event/loop.h"
 
+// Maximum number of commands from + or -c arguments.
+#define MAX_ARG_CMDS 10
+
 extern Loop main_loop;
 
+// Struct for various parameters passed between main() and other functions.
+typedef struct {
+  int argc;
+  char **argv;
+
+  char *use_vimrc;                      // vimrc from -u argument
+  bool clean;                           // --clean argument
+
+  int n_commands;                       // no. of commands from + or -c
+  char *commands[MAX_ARG_CMDS];         // commands from + or -c arg
+  char_u cmds_tofree[MAX_ARG_CMDS];     // commands that need free()
+  int n_pre_commands;                   // no. of commands from --cmd
+  char *pre_commands[MAX_ARG_CMDS];     // commands from --cmd argument
+
+  int edit_type;                        // type of editing to do
+  char_u *tagname;                      // tag from -t argument
+  char_u *use_ef;                       // 'errorfile' from -q argument
+
+  bool input_isatty;                    // stdin is a terminal
+  bool output_isatty;                   // stdout is a terminal
+  bool err_isatty;                      // stderr is a terminal
+  int no_swap_file;                     // "-n" argument used
+  int use_debug_break_level;
+  int window_count;                     // number of windows to use
+  int window_layout;                    // 0, WIN_HOR, WIN_VER or WIN_TABS
+
+  int diff_mode;                        // start with 'diff' set
+
+  char *listen_addr;                    // --listen {address}
+} mparm_T;
+
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "main.h.generated.h"
 #endif