Continuity mistake: When Daffy begins reading "The Scarlet Pumpernickel" at the start of the cartoon, you can see that the script is by the wall. Later on, both Daffy and the script are in front of J.L.'s desk, and a few shots later they are near the wall again.
Continuity mistake: When the Scarlet Pumpernickel (Daffy) takes a box outside his pocket when he arrives at the church, you can see that there is nothing on the box and he puts his hand on the box to open it. But when we see the box in the next shot, it now has "Ye Olde Olympic High Jumper" on it and the Scarlet Pumpernickel's hand is no longer on the box.
Sylvester: First, I am happy, for I am to marry the fair Melissa. Then, I am furious, because I despise the Scarlet P-P-Pumpernickel.