Typing the extension is a pain
Not if you rename "error_log" to "error.log" - same number of characters! :p
then Windows shows you the box "Are you sure you want to change the extension - this might make the file unusable"
Aye, that's one error I wish I could turn off. I barely ever see it any more; after hitting F2 to rename a file, I always finish the rename operation with a double enter in quick succession to confirm the "Yes, Windows, I'm not my 73 year-old-grandmother, I know what I'm doing - please get out of my way you overly cautious and distrusting twerp" dialog.
I just want to click the file and open it. I can't even drag it into my php editor - that thinks it's getting an image.
Apparently there is actually a way to do this; this page discusses how to associate all extensionless files with a specific program (ironically enough, it's regarding the same issue - a "error_log" file).
Me being the power user I am, I just skipped straight to tinkering with the registry. If you create the key [HKEY_CLASSES_ROOT.] and modify the (Default) value to be "txtfile", all extensionless files will be treated as text files (e.g. the default type for .txt files) and be opened with the relevant default program.
What I can do is drag it onto the program icon - better than nothing - at least when the icon isn't behind multiple windows.
I've solved that last bit by pinning Vim (my text editor of choice) to my taskbar (I'm using Win7).