Determine if a commit is a merge commit, i.e. has more than one parent.
Examples
if (FALSE) { # \dontrun{
## Initialize a temporary repository
path <- tempfile(pattern="git2r-")
dir.create(path)
repo <- init(path)
## Create a user and commit a file
config(repo, user.name = "Alice", user.email = "alice@example.org")
writeLines(c("First line in file 1.", "Second line in file 1."),
file.path(path, "example-1.txt"))
add(repo, "example-1.txt")
commit(repo, "First commit message")
## Create and add one more file
writeLines(c("First line in file 2.", "Second line in file 2."),
file.path(path, "example-2.txt"))
add(repo, "example-2.txt")
commit(repo, "Second commit message")
## Create a new branch 'fix'
checkout(repo, "fix", create = TRUE)
## Update 'example-1.txt' (swap words in first line) and commit
writeLines(c("line First in file 1.", "Second line in file 1."),
file.path(path, "example-1.txt"))
add(repo, "example-1.txt")
commit(repo, "Third commit message")
checkout(repo, "master")
## Update 'example-2.txt' (swap words in second line) and commit
writeLines(c("First line in file 2.", "line Second in file 2."),
file.path(path, "example-2.txt"))
add(repo, "example-2.txt")
commit(repo, "Fourth commit message")
## Merge 'fix'
merge(repo, "fix")
## Display parents of last commit
parents(lookup(repo, branch_target(repository_head(repo))))
## Check that last commit is a merge
is_merge(lookup(repo, branch_target(repository_head(repo))))
} # }