Add Space as 2nd file-path copier key (easy to use)

README.md

@@ -244,7 +244,7 @@ optional arguments:
               f | Archive entry
               F | List archive
              ^F | Extract archive
-             ^K | Copy file path
+      Space, ^K | Copy file path
              ^Y | Toggle multi-copy
              ^T | Toggle path quote
              ^L | Redraw, clear prompt

nnn.1

@@ -105,7 +105,7 @@ Archive current entry
 List files in archive
 .It Ic ^F
 Extract archive in current directory
-.It Ic ^K
+.It Ic Space, ^K
 Invoke file path copier
 .It Ic ^Y
 Toggle multiple file path copy mode

nnn.c

@@ -1952,7 +1952,7 @@ show_help(char *path)
 	     "ef | Archive entry\n"
 	     "eF | List archive\n"
 	    "d^F | Extract archive\n"
-	    "d^K | Copy file path\n"
+     "6Space, ^K | Copy file path\n"
 	    "d^Y | Toggle multi-copy\n"
 	    "d^T | Toggle path quote\n"
 	    "d^L | Redraw, clear prompt\n"

nnn.h

@@ -156,6 +156,7 @@ static struct key bindings[] = {
 	{ KEY_F(5),       SEL_REDRAW,    "",     "" }, /* Undocumented */
 	/* Copy currently selected file path */
 	{ CONTROL('K'),   SEL_COPY,      "",     "" },
+	{ ' ',            SEL_COPY,      "",     "" },
 	/* Toggle copy multiple file paths */
 	{ CONTROL('Y'),   SEL_COPYMUL,   "",     "" },
 	/* Toggle quote on while copy */