+# Generates completion reply with compgen from newline-separated possible
+# completion filenames.
+# It accepts 1 to 3 arguments:
+# 1: List of possible completion filenames, separated by a single newline.
+# 2: A directory prefix to be added to each possible completion filename
+# (optional).
+# 3: Generate possible completion matches for this word (optional).
+__gitcomp_file ()
+{
+ local IFS=$'\n'
+
+ # XXX does not work when the directory prefix contains a tilde,
+ # since tilde expansion is not applied.
+ # This means that COMPREPLY will be empty and Bash default
+ # completion will be used.
+ COMPREPLY=($(compgen -P "${2-}" -W "$1" -- "${3-$cur}"))
+
+ # Tell Bash that compspec generates filenames.
+ compopt -o filenames 2>/dev/null
+}
+
+__git_index_file_list_filter_compat ()
+{
+ local path
+
+ while read -r path; do
+ case "$path" in
+ ?*/*) echo "${path%%/*}/" ;;
+ *) echo "$path" ;;
+ esac
+ done
+}
+
+__git_index_file_list_filter_bash ()
+{
+ local path
+
+ while read -r path; do
+ case "$path" in
+ ?*/*)
+ # XXX if we append a slash to directory names when using
+ # `compopt -o filenames`, Bash will append another slash.
+ # This is pretty stupid, and this the reason why we have to
+ # define a compatible version for this function.
+ echo "${path%%/*}" ;;
+ *)
+ echo "$path" ;;
+ esac
+ done
+}
+
+# Process path list returned by "ls-files" and "diff-index --name-only"
+# commands, in order to list only file names relative to a specified
+# directory, and append a slash to directory names.
+__git_index_file_list_filter ()
+{
+ # Default to Bash >= 4.x
+ __git_index_file_list_filter_bash
+}
+
+# Execute git ls-files, returning paths relative to the directory
+# specified in the first argument, and using the options specified in
+# the second argument.
+__git_ls_files_helper ()
+{
+ # NOTE: $2 is not quoted in order to support multiple options
+ cd "$1" && git ls-files --exclude-standard $2
+} 2>/dev/null
+
+
+# Execute git diff-index, returning paths relative to the directory
+# specified in the first argument, and using the tree object id
+# specified in the second argument.
+__git_diff_index_helper ()
+{
+ cd "$1" && git diff-index --name-only --relative "$2"
+} 2>/dev/null
+
+# __git_index_files accepts 1 or 2 arguments:
+# 1: Options to pass to ls-files (required).
+# Supported options are --cached, --modified, --deleted, --others,
+# and --directory.
+# 2: A directory path (optional).
+# If provided, only files within the specified directory are listed.
+# Sub directories are never recursed. Path must have a trailing
+# slash.
+__git_index_files ()
+{
+ local dir="$(__gitdir)" root="${2-.}"
+
+ if [ -d "$dir" ]; then
+ __git_ls_files_helper "$root" "$1" | __git_index_file_list_filter |
+ sort | uniq
+ fi
+}
+
+# __git_diff_index_files accepts 1 or 2 arguments:
+# 1) The id of a tree object.
+# 2) A directory path (optional).
+# If provided, only files within the specified directory are listed.
+# Sub directories are never recursed. Path must have a trailing
+# slash.
+__git_diff_index_files ()
+{
+ local dir="$(__gitdir)" root="${2-.}"
+
+ if [ -d "$dir" ]; then
+ __git_diff_index_helper "$root" "$1" | __git_index_file_list_filter |
+ sort | uniq
+ fi
+}
+