Get "git describe --abbrev=0" results into a variable

Question

Goal: get the output of git describe --tag=Foo --abbrev=0 into a Windows environment variable.

My attempt:

C:\Projects\Foo> FOR /F "tokens=* USEBACKQ" %F IN \
   (`git describe HEAD --match "Foo*" --abbrev=0 --debug`) DO SET Var=%F

Result:

describe HEAD No exact match on refs or tags, searching to describe

finished search at d501f4f270405435692e5eb369fafbb53f0c74a2 annotated 463 Foo0.0-beta traversed 562 commits

describe 0 fatal: Not a valid object name 0

That's a weird fatal error. Without the FOR, Git works:

git describe HEAD --match "Foo*" --abbrev=0 --debug

No exact match on refs or tags, searching to describe

finished search at d501f4f270405435692e5eb369fafbb53f0c74a2 annotated 463 Foo0.0-beta traversed 562 commits

Foo0.0-beta

Now the describe 0 fatal can be traced back to the --abbrev=0 argument, but that's an essential argument. It seems that FOR has broken the --abbrev=0 argument into two parts, which resulted in Git treating the 0 as a hash value, and trying to find a tag to describe that hash.

References: Getting the output of a command into a variable, Getting a tag name with git describe

Answer 1

Escape the = using a caret (^)

FOR /F "tokens=* USEBACKQ" %F IN \
   (`git describe HEAD --match "Foo*" --abbrev^=0 --debug`) DO SET Var=%F