let max = g:notmuch_search_from_column_width
let from = m[3]
if strlen(from) >= max
- let from = m[3][0:max-4] . '...'
+ let from = substitute(m[3][0:max-4], '[^A-Za-z1-9_]*$', '', '') . '...'
endif
return printf('%s %-20s | %s (%s)', m[2], from, m[4], m[5])
endfunction