properly report editor error

source/error.c

@@ -28,6 +28,7 @@ void errorn(int n, ...) {
 
     switch (n) {
         case E_OPEN_EDITOR: verror("failed to open editor '%s'", argv);            break;
+        case E_IN_EDITOR:   verror("editor exited with '%d'", argv);               break;
         case E_FILE_ACCESS: verror("failed to interact with file '%s'", argv);     break;
         case E_FILE_DELETE: verror("failed to delete file '%s'", argv);            break;
         case E_FILE_MOVE:   verror("failed to move '%s' to '%s'", argv);           break;

source/error.h

@@ -3,6 +3,7 @@
 
 enum {
     E_OPEN_EDITOR = 1,
+    E_IN_EDITOR,
     E_FILE_ACCESS,
     E_FILE_DELETE,
     E_FILE_MOVE,

source/main.c

@@ -46,6 +46,7 @@ int edit(const char * filename) {
     } else
     if (WIFEXITED(result)
     &&  WEXITSTATUS(result) != 0) {
+        errorn(E_IN_EDITOR, WEXITSTATUS(result));
         return 1;
     }