Activate proposal at iter. When this functions returns FALSE, the default
activation of proposal will take place which replaces the word at iter
with the text of proposal (see gtk_source_completion_proposal_get_text()).
Here is how the default activation selects the boundaries of the word to
replace. The end of the word is iter. For the start of the word, it depends
on whether a start iter is defined for proposal (see
gtk_source_completion_provider_get_start_iter()). If a start iter is defined,
the start of the word is the start iter. Else, the word (as long as possible)
will contain only alphanumerical and the "_" characters.
Activate proposal at iter. When this functions returns FALSE, the default activation of proposal will take place which replaces the word at iter with the text of proposal (see gtk_source_completion_proposal_get_text()). Here is how the default activation selects the boundaries of the word to replace. The end of the word is iter. For the start of the word, it depends on whether a start iter is defined for proposal (see gtk_source_completion_provider_get_start_iter()). If a start iter is defined, the start of the word is the start iter. Else, the word (as long as possible) will contain only alphanumerical and the "_" characters.