On Sun, Dec 02, 2018 at 09:07:47PM +1100, Robert White wrote: > `git log --pretty short` gives the error message "ambiguous argument > 'short'". To get the expected result, you need to use `git log > --pretty=short`. However, `git log --since yesterday` and `git log > --since=yesterday` both work as expected. > > When is an = needed? What is the reason for these inconsistencies? As Duy mentioned, this has to do with optional arguments for some flags. This is discussed in more detail in "git help cli". Notably (and as advised in that manpage), you should always use the "stuck" form (with the "=") in scripts, in case a flag grows an optional value later. -Peff
