2012/12/28 ridiculous_fish <corydo...@ridiculousfish.com>: > On Dec 21, 2012, at 10:15 AM, Cheer Xiao <xiaqq...@gmail.com> wrote: > >> 2012/12/19 ridiculous_fish <corydo...@ridiculousfish.com>: >>> After running a command, some processing occurs on a background thread. >>> When that's done, it notifies the main thread, which adds the item to the >>> history. The earliest that the main thread can respond to the notification >>> is in its main "event loop", which is a call to select(). So the history >>> item only gets added after the next prompt is displayed. >>> >> >> What's the motivation for using another thread for adding history? > > The motivation is as follows: when storing a history item, fish tries to > detect which arguments are valid file paths, and then only autosuggests the > command if those paths remain valid. For example, if you run "cat fish.cpp" > in the fish source directory, fish will notice that 'fish.cpp' is a valid > path. If you go to another directory, it won't autosuggest that command, > unless a fish.cpp happens to be in that directory too. > > Checking whether an argument is a valid path requires disk I/O that may be > slow (think NFS server), so it's done in a background thread. > > History is saved synchronously on the main thread. The history file lives in > your home directory, and home directories are typically fast to access, so > it's not as important to make that asynchronous. (However it would be nice to > make it so.)
Hm, if fish is already remembering filenames for auto-suggestion, it might make sense to make the table available to shell scripts as well. That will make implementing fasd a breeze. :) -- Regards, Cheer Xiao ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnmore_123012 _______________________________________________ Fish-users mailing list Fish-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fish-users
