gbranden pushed a commit to branch master
in repository groff.
commit a4686f83ba43c6e8a0567bc1089b386096aa764f
Author: G. Branden Robinson <[email protected]>
AuthorDate: Fri Apr 24 19:17:26 2026 -0500
[troff]: Empty \n[.itm] after input trap springs.
* src/roff/troff/env.cpp (environment::newline): Reset contents of
read-only `.itm` register (introduced in groff 1.24.0) to null after
an input trap has sprung, so that it doesn't interpolate a stale
and/or misleading value.
Fixes <https://savannah.gnu.org/bugs/?68278>. Continues commit
1fce75f6ba, 2024-02-11.
---
ChangeLog | 10 ++++++++++
src/roff/troff/env.cpp | 4 +++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 7b2befeb2..a2906cdd7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2026-04-24 G. Branden Robinson <[email protected]>
+
+ * src/roff/troff/env.cpp (environment::newline): Reset contents
+ of read-only `.itm` register (introduced in groff 1.24.0) to
+ null after an input trap has sprung, so that it doesn't
+ interpolate a stale and/or misleading value.
+
+ Fixes <https://savannah.gnu.org/bugs/?68278>. Continues commit
+ 1fce75f6ba, 2024-02-11.
+
2026-04-22 G. Branden Robinson <[email protected]>
* src/roff/groff/tests/\
diff --git a/src/roff/troff/env.cpp b/src/roff/troff/env.cpp
index b0027304d..cad5de9a4 100644
--- a/src/roff/troff/env.cpp
+++ b/src/roff/troff/env.cpp
@@ -2013,8 +2013,10 @@ void environment::newline()
}
if (input_trap_count > 0) {
if (!(continued_input_trap && (was_previous_line_interrupted > 0)))
- if (--input_trap_count == 0)
+ if (--input_trap_count == 0) {
spring_trap(input_trap);
+ curenv->input_trap = NULL_SYMBOL;
+ }
}
}
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