fix #235

[cero1988]

fix #235

[gwsw]

The problem I see with this commit is the user experience is poor if the user tries to manually set a mark in the help file. Any command entered after a mark command is ignored:

1. Run less.
2. Press h. The help page is displayed.
3. Press m. The mark command is ignored as it should be.
4. Press any letter representing a valid command, such as / to start a search or q to exit help. It is silently ignored, which is likely to be unexpected and confusing.

[gwsw]

This modification of your patch might work better, but I haven't fully tested or analyzed it yet.

@@ -2085,7 +2085,11 @@ public void commands(void)
             * Set a mark.
             */
            if (ch_getflags() & CH_HELPFILE)
+           {
+               if (ungot != NULL)
+                   getcc();
                break;
+           }
            start_mca(A_SETMARK, "set mark: ", NULL, 0);
            c = getcc();
            if (is_erase_char(c) || is_newline_char(c))

[cero1988]

I completely agree, this is a better solution.
The patch also seems to be working well after I tested it.

[gwsw]

Fixed in f0eb3ee.