[groff] 06/26: [troff]: Clarify `nm` request diagnostics.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit cdd4bd1634b9d2f4c04e2d6d4de30ddc918f8e2b
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat Jul 13 03:57:26 2024 -0500

    [troff]: Clarify `nm` request diagnostics.
    
    * src/roff/troff/env.cpp (number_lines): Clarify diagnostics; output
      line numbers cannot be negative, but input line numbers can, in both
      AT&T/DWB troff and GNU troff.
---
 ChangeLog              | 6 ++++++
 src/roff/troff/env.cpp | 5 +++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 994b72108..0312f3424 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2024-07-13  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+       * src/roff/troff/env.cpp (number_lines): Clarify diagnostics;
+       output line numbers cannot be negative, but input line numbers
+       can, in both AT&T/DWB troff and GNU troff.
+
 2024-07-13  G. Branden Robinson <g.branden.robinson@gmail.com>
 
        [troff]: Boolify `set_location()` member function and those of
diff --git a/src/roff/troff/env.cpp b/src/roff/troff/env.cpp
index 7e315c70d..543ed44f1 100644
--- a/src/roff/troff/env.cpp
+++ b/src/roff/troff/env.cpp
@@ -1651,7 +1651,7 @@ void number_lines()
       if (get_integer(&n, next_line_number)) {
        next_line_number = n;
        if (next_line_number < 0) {
-         warning(WARN_RANGE, "negative line number");
+         warning(WARN_RANGE, "output line number cannot be negative");
          next_line_number = 0;
        }
       }
@@ -1663,7 +1663,8 @@ void number_lines()
       if (!tok.is_usable_as_delimiter()) {
        if (get_integer(&n)) {
          if (n <= 0) {
-           warning(WARN_RANGE, "negative or zero line number multiple");
+           warning(WARN_RANGE, "output line number multiple cannot"
+                   "be nonpositive");
          }
          else
            curenv->line_number_multiple = n;