[tz] [PROPOSED] "m" now abbreviates both "maximum" and "minimum"

[Paul Eggert]

* zishrink.awk: Add comment about "m".
---
 zishrink.awk | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/zishrink.awk b/zishrink.awk
index 66968e86..eb4aa785 100644
--- a/zishrink.awk
+++ b/zishrink.awk
@@ -199,6 +199,9 @@ function process_input_line(line, \
   }
 
   # Abbreviate "max", "min", "only" and month names.
+  # Although "max" and "min" can both be abbreviated to just "m",
+  # use the longer forms "ma" and "mi" for now,
+  # for compatibility with zic 2023d and earlier.
   gsub(/ max /, " ma ", line)
   gsub(/ min /, " mi ", line)
   gsub(/ only /, " o ", line)
-- 
2.40.1