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McDonald, who shares the same name as the mascot for the fast-food restaurant chain, had been banned from contacting his estranged wife.
However, the 50-year-old from Westgate followed his former partner into McDonald's and texted her, thus breaching bail conditions.
Prosecutor Julie Farbrace stated: "Mr McDonald followed his ex-wife along a number of streets. She parked in McDonald's in Westwood Cross and he followed her in.
"She then drove into Tesco. It was then that she herself went into a petrol station and he approached the car."
McDonald received a suspended 86-day jail sentence and was ordered to complete a domestic abuse programme, as well as pay £180 in court costs and victim surcharges.
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