Ivan “CLOVIS” Canet CLOVIS-AI

## git.md

      
        
          
            
              
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                briceburg
                / git.md
            
            
              Created
              November 22, 2015 05:42
            
              
                git - checking fast-forward-ness
              
          
        
      
        
  
      
    git merge-base --is-ancestor master HEAD
from man git merge-base

A common idiom to check "fast-forward-ness" between two commits A and B is (or at least used to be) to compute the merge
base between A and B, and check if it is the same as A, in which case, A is an ancestor of B. You will see this idiom used