Once i used "Better Touch" in Mac to enable the maximise feature and it was successful.
All-time mac users and pc-migraters understand different things when asked "to maximise windows without going fullscreen"
This usage wish is coming from pc-usage.
Alt + "click maximise button" does not maximize the window borders to screen's every edge and snap it.
it only changes the windows size big enough to show all content without needing to scroll.
That's not maximising without going fullscreen.
All-time mac users do not understand the wish since they never experienced it.
i also like going full screen and snap to borders without going fullscreen like macromedia-flash or video-fullscreen fullscreen. that's something missing in Mac.
When pc-users asks for going full screen, this is what they ask > maximise window to left screen border, to screen right border, to dock upper border, to status bar bottom border. do not hide status bar, and dock