Well, not quite. In my case, it's more that we (a fellow DM and I, in turns and stages) did the work to expand out the magic item table to include gobs of different weapons and - independently - gobs of properties and abilities to add to those weapons.
The right-hand side of the main table on this page...
www.friendsofgravity.com/games/commons_room/dm_stuff/dm_items.html
...has the result, if you're interested. Each weapon at each '+' level has a rarity rating (the odds of finding one, based on the entire table). The most common magic weapon is Dagger, followed by Longsword and then Mace, Shortsword, and Shortbow; with Quarterstaff, 2-Handed Sword, Crossbow and Longbow the other most common.
That table just gives the root enchantment, from +0 to +5. The second big table - scroll way down - gives the different properties for weapons and armour, along with the odds of there being any in addition to the root enchantment.
And yes, online dice rollers are my friend when trying to roll some of those stupid-big wacky die sizes!