# File lib/repo.rb, line 259
        def find_alts(commit)
            alts=[]

            subj=runGit("log -1 --pretty='%s' #{commit}")
            return alts if $? != 0

            branches = getStableBranchList().map(){|v| @@STABLE_REPO + "/" + versionToStableBranch(v)}

            runGit("log -F --grep \"$#{subj}\" --format=\"%H\" #{branches.join(" ")}").
                split("\n").each(){|c|
                next if c == commit
                cursubj=runGit("log -1 --pretty='%s' #{c}")
                alts << c if subj == cursubj
            }

            return alts
        end