[groff] 01/01: Dot signifies missing parameter in .pdftransition

[Deri James]

deri pushed a commit to branch master
in repository groff.

commit 24d84d7413ee13a9e92ca7142bf9e3e1602d8e8f
Author: Deri James <address@hidden>
Date:   Fri Mar 9 15:14:07 2018 +0000

    Dot signifies missing parameter in .pdftransition
    
    * src/devices/gropdf/gropdf.1.man: Explain the .pdftransition
    macro (and underlying '\X' command) accepts a "." to specify
    a parameter retains its current value.
---
 ChangeLog                       | 8 ++++++++
 src/devices/gropdf/gropdf.1.man | 4 +++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 94eaebc..4699a22 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2018-03-09  Deri James  <address@hidden>
+
+       Allow a "." to signify a missing parameter in .pdftransition
+
+       * src/devices/gropdf/gropdf.1.man: Explain the .pdftransition
+       macro (and underlying '\X' command) accepts a "." to specify
+       a parameter retains its current value.
+
 2018-03-09  Colin Watson  <address@hidden>
 
        man pages: fix incorrect cross-referenced section
diff --git a/src/devices/gropdf/gropdf.1.man b/src/devices/gropdf/gropdf.1.man
index e07946d..466049f 100644
--- a/src/devices/gropdf/gropdf.1.man
+++ b/src/devices/gropdf/gropdf.1.man
@@ -1047,7 +1047,9 @@ in is rectangular and opaque.
 .IP
 This command can be used by calling the macro
 .B .pdftransition
-using the parameters described above.
+using the parameters described above. Any of the parameters may be
+replaced with a "." which signifies the parameter retains its
+previous value, also any trailing missing parameters are ignored.
 .LP
 .IP
 .B Note: