gbranden pushed a commit to branch master
in repository groff.
commit 9835b2b5980162f8dd9dd85d4e241491e1d3daee
Author: G. Branden Robinson <[email protected]>
AuthorDate: Tue May 13 12:08:15 2025 -0500
[troff]: Reduce unnecessary output in troff mode.
* src/roff/troff/node.cpp (troff_output_file::fill_color)
(troff_output_file::stroke_color): Emit motion commands prior to
changing fill or stroke color only in nroff mode. Annotate why.
---
ChangeLog | 6 ++++++
src/roff/troff/node.cpp | 13 ++++++++++---
2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index fc0227db2..99bfd70bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2025-05-13 G. Branden Robinson <[email protected]>
+
+ * src/roff/troff/node.cpp (troff_output_file::fill_color)
+ (troff_output_file::stroke_color): Emit motion commands prior to
+ changing fill or stroke color only in nroff mode. Annotate why.
+
2025-05-13 G. Branden Robinson <[email protected]>
* src/roff/troff/node.cpp (make_glyph_node): Assign Boolean, not
diff --git a/src/roff/troff/node.cpp b/src/roff/troff/node.cpp
index 81f1062e2..576826bec 100644
--- a/src/roff/troff/node.cpp
+++ b/src/roff/troff/node.cpp
@@ -1300,7 +1300,11 @@ void troff_output_file::fill_color(color *col)
if (!want_color_output)
return;
flush_tbuf();
- do_motion();
+ // In nroff-mode devices (grotty), the fill color is a property of the
+ // character cell; our drawing position has to be on the page, lest
+ // grotty grouse "output above first line discarded".
+ if (in_nroff_mode)
+ do_motion();
put("DF");
unsigned int components[4];
color_scheme scheme;
@@ -1353,8 +1357,11 @@ void troff_output_file::stroke_color(color *col)
if (!want_color_output)
return;
flush_tbuf();
- // grotty doesn't like a color command if the vertical position is zero.
- do_motion();
+ // In nroff-mode devices (grotty), the stroke color is a property of
+ // the character cell; our drawing position has to be on the page,
+ // lest grotty grouse "output above first line discarded".
+ if (in_nroff_mode)
+ do_motion();
put("m");
unsigned int components[4];
color_scheme scheme;
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