add mysql_heavy table format (#113)

Like mysql_unicode, but with heavy Unicode lines.

Author: rolandwalker

CHANGELOG

@@ -1,5 +1,11 @@
 # Changelog
 
+## Version 2.15.0
+
+(released on 2026-05-16)
+
+- Add `mysql_heavy` table format.
+
 ## Version 2.14.0
 
 (released on 2026-04-13)

cli_helpers/tabular_output/tabulate_adapter.py

@@ -92,6 +92,17 @@
     with_header_hide=None,
 )
 
+tabulate._table_formats["mysql_heavy"] = tabulate.TableFormat(
+    lineabove=tabulate.Line("┏", "━", "┳", "┓"),
+    linebelowheader=tabulate.Line("┣", "━", "╋", "┫"),
+    linebetweenrows=None,
+    linebelow=tabulate.Line("┗", "━", "┻", "┛"),
+    headerrow=tabulate.DataRow("┃", "┃", "┃"),
+    datarow=tabulate.DataRow("┃", "┃", "┃"),
+    padding=1,
+    with_header_hide=None,
+)
+
 # "minimal" is the same as "plain", but without headers
 tabulate._table_formats["minimal"] = tabulate._table_formats["plain"]
 
@@ -128,6 +139,7 @@
     "double",
     "mysql",
     "mysql_unicode",
+    "mysql_heavy",
 )
 
 supported_formats = supported_markup_formats + supported_table_formats