[groff] 05/10: HACKING: Tighten example of `seq` replacement.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 47d5846631c99ea5ad85e45b0318805faffb7971
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Thu May 25 03:25:25 2023 -0500

    HACKING: Tighten example of `seq` replacement.
---
 HACKING | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/HACKING b/HACKING
index f34c71a1f..3e1b9fd2d 100644
--- a/HACKING
+++ b/HACKING
@@ -85,11 +85,8 @@ Here are some portability notes on writing automated tests.
 * The GNU coreutils "seq" command is handy but not standardized by
   POSIX.  Replace it with a while loop.
 
-    seq 53
-    n=1; while [ $n -le 53 ]; do echo $n; n=$(( n + 1 )); done
-
-  "unset" is supported by POSIX-conformant shell; use it to remove
-  temporary shell variables after use.
+    # emulate "seq 53"
+    n=1; while [ $n -le 53 ]; do echo $n; n=$(( n + 1 )); done; unset n
 
 * The "od" command on macOS can put extra space characters (i.e., spaces
   that don't correspond to the input) at the ends of lines when using