[Groff] Re: Groff hyphenation problem

[Werner LEMBERG]

This problem was the very reason to start maintaining groff together
with Ted:

> Why does groff suppress hyphenation break at "-" in the context of
> words with escapes like "\ " in them?

The problem is even more serious: Any word which is not finished by
either a space or a newline character won't be hyphenated.  Most
escape sequences fall into this category; most notably `\ ' and `\~'.
Below are two tiny patches which solve this problem, I believe.
Before committing it I ask you all for testing.


    Werner


======================================================================

--- env.h.old   Sun Nov 12 16:19:15 2000
+++ env.h       Thu Nov 23 22:22:22 2000
@@ -189,7 +189,6 @@
 #ifdef WIDOW_CONTROL
   void mark_last_line();
 #endif /* WIDOW_CONTROL */
-  void possibly_break_line(int forced = 0);
   breakpoint *choose_breakpoint();
   void hyphenate_line();
   void start_field();
@@ -268,6 +267,7 @@
   void set_input_line_position(hunits);        // used by \n(hp
   void interrupt();
   void spread() { spread_flag = 1; }
+  void possibly_break_line(int forced = 0);
   void do_break();                     // .br
   void final_break();
   void add_html_tag (const char *name);

======================================================================

--- input.cc.old        Thu Nov 23 08:27:19 2000
+++ input.cc    Thu Nov 23 22:38:09 2000
@@ -2292,6 +2292,7 @@
          curenv->add_node(tok.nd);
          tok.nd = 0;
          bol = 0;
+         curenv->possibly_break_line();
        }
        break;
       }