gEDA-dev: [pcb] Possible bug in prompt_for() in GTK HID

[Tomaž Šolc]

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Hi

When browsing through PCB code I've noticed that in several points core
PCB code expects that prompt_for() call will return NULL when the user
clicks the Cancel button (see action.c for example).

However in GTK HID ghid_prompt_for() is a wrapper for
ghid_dialog_input(), which returns an empty string in that case. So it
looks like PCB will sometimes execute some action even if the user click
cancel.

The fix is pretty trivial and I can submit a patch is someone can
confirm that this is really a bug.

Does lesstif's prompt_for() return NULL?

Best regards
Tomaz
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