Bad auto-splitting when switching to equation array

[Christoph Burschka]

In a math environment (display or environment), you can switch to an
EqnArray environment with Ctrl Enter or Shift Enter.

If there is already an equation, it will be automatically split into columns
on particular symbols, including = and a few other operators and arrows.

Unfortunately, it passes right over some symbols (such as \coloneqq or
\dblcolon). It also splits on the first symbol, so a = b \Leftrightarrow c
= d will become a=b\Leftrightarrow c=d rather than a=b 
\Leftrightarrow  c=d, but at least that can be avoided with parentheses.

Is there some way to add operators like \coloneqq and \dblcolon to the list
of symbols that equations will be split on?

Bad auto-splitting when switching to equation array

[Christoph Burschka]

In a math environment (display or environment), you can switch to an
EqnArray environment with Ctrl Enter or Shift Enter.

If there is already an equation, it will be automatically split into columns
on particular symbols, including = and a few other operators and arrows.

Unfortunately, it passes right over some symbols (such as \coloneqq or
\dblcolon). It also splits on the first symbol, so a = b \Leftrightarrow c
= d will become a=b\Leftrightarrow c=d rather than a=b 
\Leftrightarrow  c=d, but at least that can be avoided with parentheses.

Is there some way to add operators like \coloneqq and \dblcolon to the list
of symbols that equations will be split on?

Bad auto-splitting when switching to equation array

[Christoph Burschka]

In a math environment (display or environment), you can switch to an
EqnArray environment with Ctrl Enter or Shift Enter.

If there is already an equation, it will be automatically split into columns
on particular symbols, including "=" and a few other operators and arrows.

Unfortunately, it passes right over some symbols (such as \coloneqq or
\dblcolon). It also splits on the first symbol, so "a = b \Leftrightarrow c
= d" will become "a&=\Leftrightarrow c=d" rather than "a=b &
\Leftrightarrow & c=d", but at least that can be avoided with parentheses.

Is there some way to add operators like \coloneqq and \dblcolon to the list
of symbols that equations will be split on?