> fossil set diff-command 'diff -u'
> fossil diff
...
sh: diff -u: command not found

rwilson added on 2009-09-22 13:26:01:
this happens in windows too.

drh added on 2009-09-22 14:30:57:
This broke when I "fixed" ticket 8d073be8808b - diff/editor/gdiff settings don't support paths with spaces. The fix for 8d073be8808b was put the entire "diff" command argument in double-quotes so that it is treated as a single entity by system().

I suppose the right solution here is to require windows people with spaces in their pathnames to add their own double-quotes around those paths. Otherwise, there is no way (that I can see) to distinguish between spaces in pathnames and separate arguments in a command.

rwilson added on 2009-09-22 18:42:22:
the problem with the windows shell is that when you quote an argument to compensate for spaces, the shell gives you the argument in argv[bad-link: n]n without the quotes. there doesn't seem to be a way to escape quotes in the shell. my best workaround so far is to use the DOS-style paths without spaces.

PS C:\fossil\xyntservice> fossil setting editor C:\progra~1\JGsoft\EditPadPro6\EditPadPro.exe /newinstance
Usage: C:\WINDOWS\system32\fossil.exe setting ?PROPERTY? ?VALUE?
PS C:\fossil\xyntservice> fossil settings editor '"c:\program files\jgsoft\editpadpro6\editpadpro.exe" /newinstance'
Usage: C:\WINDOWS\system32\fossil.exe settings ?PROPERTY? ?VALUE?
PS C:\fossil\xyntservice> fossil setting editor "C:\progra~1\JGsoft\EditPadPro6\EditPadPro.exe /newinstance"
PS C:\fossil\xyntservice> fossil settings
autosync             (local)  1
diff-command
dont-push
editor               (local)  C:\progra~1\JGsoft\EditPadPro6\EditPadPro.exe /newinstance
gdiff-command        (local)  C:\Program Files\Beyond Compare 3\BComp.exe
http-port
localauth            (local)  0
clearsign            (local)  0
pgp-command
mtime-changes
proxy
web-browser
PS C:\fossil\xyntservice>

rwilson added on 2009-09-22 18:55:18:
double quoting doesn't work either, but i'm not sure its the shell. technically you should be able to double-quote ("") or escape quotes with a carat (^"). windows powershell can escape with backquotes (`"). none of these methods appears to work with fossil.

PS C:\fossil\xyntservice> fossil settings editor """c:\program files\jgsoft\editpadpro6\editpadpro.exe"" /newinstance"
Usage: C:\WINDOWS\system32\fossil.exe settings ?PROPERTY? ?VALUE?

drh added on 2009-10-31 15:09:12:
Check-in b2fdf4fe143516126091186adb69c564ed7ced43