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When navigating to various pages that are in a text-based format, such as source code, .tex/.sty files, unix configuration files, &c, Firefox often —I think whenever it can determine the text file's MIME type— ask for an external application to render them. How can I tell Firefox to just render all such pages as plain text without external assistance?

I'm using Firefox 3.5.10 on Mac Os 10.4.

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This is a long-standing issue - almost 10 years now: – njd Jun 30 '10 at 10:31
up vote 3 down vote accepted

There's no sign of this feature being built into the browser, but there is an extension for this:

Open in Browser should do what you want.

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Bingo! One hour turnaround - my best SU experience yet - thank you! – Charles Stewart Jun 30 '10 at 10:53

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