Handheld electronic device including auto completion of punctuation in numerical entry, and associated method

A handheld electronic device, comprising:

• a keyboard having a plurality of input members;
• a display;
• a processor apparatus comprising a processor and a memory in electronic communication with one another, said processor apparatus having stored therein a number of routines which, when executed on the processor, cause the handheld electronic device to perform operations comprising:
• detecting as an alphanumeric input a first number of input member actuations;
• responsive to said detecting an alphanumeric input, generating a first output;
• detecting as a punctuation input a second number of second input member actuations;
• making a determination that said first output comprises a digit;
• responsive to said determination that said first output comprises a digit, selecting as a preferred punctuation arrangement a predetermined punctuation arrangement from among a plurality of punctuation arrangements that correspond with said punctuation input;
• outputting said predetermined punctuation arrangement;
• and
• simultaneously outputting another punctuation arrangement as an alternative punctuation arrangement selectable by a user.