[groff] 12/51: pic(1): Clarify how "copy ... thru" works.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit d9c3440b2c2405d80ac3da6c1b4d036ffb358394
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat Sep 3 21:48:23 2022 -0500

    pic(1): Clarify how "copy ... thru" works.
---
 src/preproc/pic/pic.1.man | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/preproc/pic/pic.1.man b/src/preproc/pic/pic.1.man
index 9efb12742..f25b8dbcc 100644
--- a/src/preproc/pic/pic.1.man
+++ b/src/preproc/pic/pic.1.man
@@ -682,6 +682,12 @@ are equivalent.
 The commands to be performed for each line can also be taken from a
 macro defined earlier by giving the name of the macro as the argument to
 .BR thru .
+.
+The argument after
+.B thru
+is looked up as a macro name first;
+if not defined,
+its first character is interpreted as a delimiter.
 .RE
 .
 .