+----
+stty / catv
+ stty's visible() function and catv's guts are identical. Merge them into
+ an appropriate libbb function.
+----
+struct suffix_mult
+ Several duplicate users of: grep -r "1024\*1024" * -B2 -A1
+ Merge to a single size_suffixes[] in libbb.
+ Users: head tail od_bloaty hexdump and (partially as it wouldn't hurt) svlogd