in reply to On the fly syntax checkers in emacs, ultraedit or vi

Komodo got it from Emacs, its called flymake-mode

see emacs wiki or sourceforge

But be aware of downsides: Vulnerabilities when editing untrusted code... (Komodo)!

searching for "flymake YourEditor" will show you more alternatives.

Cheers Rolf

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Re^2: On the fly syntax checkers (flymake in emacs)
by astroboy (Chaplain) on Dec 02, 2012 at 06:45 UTC
    Thanks for the head up ... I use Komodo!
      Hi astroboy,

      I'm not a Komodo expert, but it's likely that they also copied the configuration options emacs offers.

      from *Customize Group: Flymake*

      Flymake Start Syntax Check On Find File:  Toggle  off (nil)
         State: SAVED and set.
         Start syntax check on find file.

      No check on load means that simply viewing a foreign file w/o modifying it won't be a risk.

      ("Find file" is emacs lingo for loading a file╣ for editing)

      HTH! =)

      Cheers Rolf

      ╣) or switching to a file if already loaded