* src/roff/troff/env.cpp (environment::do_break): Insert zero-width

space only if there is no previous space.  This fixes a bug which
caused unwanted filling of the last line in a paragraph.  Thanks to
Gunnar Ritter for an analysis.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/roff/troff/env.cpp b/src/roff/troff/env.cpp
index 25bde8a1..0f907be8 100644
--- a/src/roff/troff/env.cpp
+++ b/src/roff/troff/env.cpp
@@ -2336,8 +2336,10 @@ void environment::do_break(int do_spread)
     wrap_up_tab();
   if (line) {
     // this is so that hyphenation works
-    line = new space_node(H0, get_fill_color(), line);
-    space_total++;
+    if (line->nspaces() == 0) {
+      line = new space_node(H0, get_fill_color(), line);
+      space_total++;
+    }
     possibly_break_line(0, do_spread);
   }
   while (line != 0 && line->discardable()) {