App hangs upon attempting to open a semicolon-delimited file

[Robert Leach]

USE CASE: WHAT DO YOU WANT TO DO?

Import a semicolon-delimited file

STEPS TO REPRODUCE AN ISSUE (OR TRIGGER A NEW FEATURE)

1. Click the open button
2. Select the file attached to this issue (small_133x133_semicolon.txt)
3. Click Open

CURRENT BEHAVIOR

The open dialog goes away and the app hangs & is unresponsive. The user has to force it to quit.

EXPECTED BEHAVIOR

An import dialog should come up and no other subsequent problems.

DEVELOPERS ONLY SECTION

SUGGESTED CHANGE (Pseudocode optional)

Each line in the preview should display as solid text (i.e. 1 column) because tab is the default delimiter. No need to try and detect the delimiter.

FILES AFFECTED (where the changes will be implemented) - developers only

unknown

LEVEL OF EFFORT - developers only

medium

COMMENTS

Discovered when testing the list import dialog, but tested in master too.

[Robert Leach]

Duplicate of #489.