Merge branch 'ap/clone-into-empty'
[gitweb.git] / contrib / completion / git-completion.bash
index 158b91284147d50a24d6dadaa7c5085cf0b7cb55..ec701e8069e995e50aa1acb3c78832bc525272f0 100755 (executable)
@@ -1,3 +1,4 @@
+#!bash
 #
 # bash completion support for core Git.
 #
@@ -50,9 +51,11 @@ case "$COMP_WORDBREAKS" in
 *)   COMP_WORDBREAKS="$COMP_WORDBREAKS:"
 esac
 
+# __gitdir accepts 0 or 1 arguments (i.e., location)
+# returns location of .git repo
 __gitdir ()
 {
-       if [ -z "$1" ]; then
+       if [ -z "${1-}" ]; then
                if [ -n "$__git_dir" ]; then
                        echo "$__git_dir"
                elif [ -d .git ]; then
@@ -67,6 +70,8 @@ __gitdir ()
        fi
 }
 
+# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
+# returns text to add to bash PS1 prompt (includes branch name)
 __git_ps1 ()
 {
        local g="$(git rev-parse --git-dir 2>/dev/null)"
@@ -111,7 +116,7 @@ __git_ps1 ()
                        fi
                fi
 
-               if [ -n "$1" ]; then
+               if [ -n "${1-}" ]; then
                        printf "$1" "${b##refs/heads/}$r"
                else
                        printf " (%s)" "${b##refs/heads/}$r"
@@ -119,6 +124,7 @@ __git_ps1 ()
        fi
 }
 
+# __gitcomp_1 requires 2 arguments
 __gitcomp_1 ()
 {
        local c IFS=' '$'\t'$'\n'
@@ -131,6 +137,8 @@ __gitcomp_1 ()
        done
 }
 
+# __gitcomp accepts 1, 2, 3, or 4 arguments
+# generates completion reply with compgen
 __gitcomp ()
 {
        local cur="${COMP_WORDS[COMP_CWORD]}"
@@ -143,25 +151,23 @@ __gitcomp ()
                ;;
        *)
                local IFS=$'\n'
-               COMPREPLY=($(compgen -P "$2" \
-                       -W "$(__gitcomp_1 "$1" "$4")" \
+               COMPREPLY=($(compgen -P "${2-}" \
+                       -W "$(__gitcomp_1 "${1-}" "${4-}")" \
                        -- "$cur"))
                ;;
        esac
 }
 
+# __git_heads accepts 0 or 1 arguments (to pass to __gitdir)
 __git_heads ()
 {
-       local cmd i is_hash=y dir="$(__gitdir "$1")"
+       local cmd i is_hash=y dir="$(__gitdir "${1-}")"
        if [ -d "$dir" ]; then
-               for i in $(git --git-dir="$dir" \
-                       for-each-ref --format='%(refname)' \
-                       refs/heads ); do
-                       echo "${i#refs/heads/}"
-               done
+               git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
+                       refs/heads
                return
        fi
-       for i in $(git ls-remote "$1" 2>/dev/null); do
+       for i in $(git ls-remote "${1-}" 2>/dev/null); do
                case "$is_hash,$i" in
                y,*) is_hash=n ;;
                n,*^{}) is_hash=y ;;
@@ -171,18 +177,16 @@ __git_heads ()
        done
 }
 
+# __git_tags accepts 0 or 1 arguments (to pass to __gitdir)
 __git_tags ()
 {
-       local cmd i is_hash=y dir="$(__gitdir "$1")"
+       local cmd i is_hash=y dir="$(__gitdir "${1-}")"
        if [ -d "$dir" ]; then
-               for i in $(git --git-dir="$dir" \
-                       for-each-ref --format='%(refname)' \
-                       refs/tags ); do
-                       echo "${i#refs/tags/}"
-               done
+               git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
+                       refs/tags
                return
        fi
-       for i in $(git ls-remote "$1" 2>/dev/null); do
+       for i in $(git ls-remote "${1-}" 2>/dev/null); do
                case "$is_hash,$i" in
                y,*) is_hash=n ;;
                n,*^{}) is_hash=y ;;
@@ -192,21 +196,25 @@ __git_tags ()
        done
 }
 
+# __git_refs accepts 0 or 1 arguments (to pass to __gitdir)
 __git_refs ()
 {
-       local cmd i is_hash=y dir="$(__gitdir "$1")"
+       local i is_hash=y dir="$(__gitdir "${1-}")"
+       local cur="${COMP_WORDS[COMP_CWORD]}" format refs
        if [ -d "$dir" ]; then
-               if [ -e "$dir/HEAD" ]; then echo HEAD; fi
-               for i in $(git --git-dir="$dir" \
-                       for-each-ref --format='%(refname)' \
-                       refs/tags refs/heads refs/remotes); do
-                       case "$i" in
-                               refs/tags/*)    echo "${i#refs/tags/}" ;;
-                               refs/heads/*)   echo "${i#refs/heads/}" ;;
-                               refs/remotes/*) echo "${i#refs/remotes/}" ;;
-                               *)              echo "$i" ;;
-                       esac
-               done
+               case "$cur" in
+               refs|refs/*)
+                       format="refname"
+                       refs="${cur%/*}"
+                       ;;
+               *)
+                       if [ -e "$dir/HEAD" ]; then echo HEAD; fi
+                       format="refname:short"
+                       refs="refs/tags refs/heads refs/remotes"
+                       ;;
+               esac
+               git --git-dir="$dir" for-each-ref --format="%($format)" \
+                       $refs
                return
        fi
        for i in $(git ls-remote "$dir" 2>/dev/null); do
@@ -221,6 +229,7 @@ __git_refs ()
        done
 }
 
+# __git_refs2 requires 1 argument (to pass to __git_refs)
 __git_refs2 ()
 {
        local i
@@ -229,6 +238,7 @@ __git_refs2 ()
        done
 }
 
+# __git_refs_remotes requires 1 argument (to pass to ls-remote)
 __git_refs_remotes ()
 {
        local cmd i is_hash=y
@@ -271,15 +281,17 @@ __git_merge_strategies ()
                echo "$__git_merge_strategylist"
                return
        fi
-       sed -n "/^all_strategies='/{
-               s/^all_strategies='//
-               s/'//
+       git merge -s help 2>&1 |
+       sed -n -e '/[Aa]vailable strategies are: /,/^$/{
+               s/\.$//
+               s/.*://
+               s/^[    ]*//
+               s/[     ]*$//
                p
-               q
-               }" "$(git --exec-path)/git-merge"
+       }'
 }
 __git_merge_strategylist=
-__git_merge_strategylist="$(__git_merge_strategies 2>/dev/null)"
+__git_merge_strategylist=$(__git_merge_strategies 2>/dev/null)
 
 __git_complete_file ()
 {
@@ -384,7 +396,9 @@ __git_porcelain_commands ()
                cat-file)         : plumbing;;
                check-attr)       : plumbing;;
                check-ref-format) : plumbing;;
+               checkout-index)   : plumbing;;
                commit-tree)      : plumbing;;
+               count-objects)    : infrequent;;
                cvsexportcommit)  : export;;
                cvsimport)        : import;;
                cvsserver)        : daemon;;
@@ -393,6 +407,7 @@ __git_porcelain_commands ()
                diff-index)       : plumbing;;
                diff-tree)        : plumbing;;
                fast-import)      : import;;
+               fast-export)      : export;;
                fsck-objects)     : plumbing;;
                fetch-pack)       : plumbing;;
                fmt-merge-msg)    : plumbing;;
@@ -402,6 +417,10 @@ __git_porcelain_commands ()
                index-pack)       : plumbing;;
                init-db)          : deprecated;;
                local-fetch)      : plumbing;;
+               lost-found)       : infrequent;;
+               ls-files)         : plumbing;;
+               ls-remote)        : plumbing;;
+               ls-tree)          : plumbing;;
                mailinfo)         : plumbing;;
                mailsplit)        : plumbing;;
                merge-*)          : plumbing;;
@@ -426,6 +445,7 @@ __git_porcelain_commands ()
                runstatus)        : plumbing;;
                sh-setup)         : internal;;
                shell)            : daemon;;
+               show-ref)         : plumbing;;
                send-pack)        : plumbing;;
                show-index)       : plumbing;;
                ssh-*)            : transport;;
@@ -440,6 +460,8 @@ __git_porcelain_commands ()
                upload-archive)   : plumbing;;
                upload-pack)      : plumbing;;
                write-tree)       : plumbing;;
+               var)              : infrequent;;
+               verify-pack)      : infrequent;;
                verify-tag)       : plumbing;;
                *) echo $i;;
                esac
@@ -461,6 +483,7 @@ __git_aliases ()
        done
 }
 
+# __git_aliased_command requires 1 argument
 __git_aliased_command ()
 {
        local word cmdline=$(git --git-dir="$(__gitdir)" \
@@ -473,6 +496,7 @@ __git_aliased_command ()
        done
 }
 
+# __git_find_subcommand requires 1 argument
 __git_find_subcommand ()
 {
        local word subcommand c=1
@@ -554,7 +578,7 @@ _git_add ()
        --*)
                __gitcomp "
                        --interactive --refresh --patch --update --dry-run
-                       --ignore-errors
+                       --ignore-errors --intent-to-add
                        "
                return
        esac
@@ -619,7 +643,6 @@ _git_branch ()
        done
 
        case "${COMP_WORDS[COMP_CWORD]}" in
-       --*=*)  COMPREPLY=() ;;
        --*)
                __gitcomp "
                        --color --no-color --verbose --abbrev= --no-abbrev
@@ -638,21 +661,12 @@ _git_branch ()
 
 _git_bundle ()
 {
-       local mycword="$COMP_CWORD"
-       case "${COMP_WORDS[0]}" in
-       git)
-               local cmd="${COMP_WORDS[2]}"
-               mycword="$((mycword-1))"
-               ;;
-       git-bundle*)
-               local cmd="${COMP_WORDS[1]}"
-               ;;
-       esac
-       case "$mycword" in
-       1)
+       local cmd="${COMP_WORDS[2]}"
+       case "$COMP_CWORD" in
+       2)
                __gitcomp "create list-heads verify unbundle"
                ;;
-       2)
+       3)
                # looking for a file
                ;;
        *)
@@ -738,7 +752,7 @@ _git_commit ()
        --*)
                __gitcomp "
                        --all --author= --signoff --verify --no-verify
-                       --edit --amend --include --only
+                       --edit --amend --include --only --interactive
                        "
                return
        esac
@@ -769,13 +783,14 @@ _git_diff ()
                __gitcomp "--cached --stat --numstat --shortstat --summary
                        --patch-with-stat --name-only --name-status --color
                        --no-color --color-words --no-renames --check
-                       --full-index --binary --abbrev --diff-filter
+                       --full-index --binary --abbrev --diff-filter=
                        --find-copies-harder --pickaxe-all --pickaxe-regex
                        --text --ignore-space-at-eol --ignore-space-change
                        --ignore-all-space --exit-code --quiet --ext-diff
                        --no-ext-diff
                        --no-prefix --src-prefix= --dst-prefix=
                        --base --ours --theirs
+                       --inter-hunk-context=
                        "
                return
                ;;
@@ -787,14 +802,9 @@ _git_fetch ()
 {
        local cur="${COMP_WORDS[COMP_CWORD]}"
 
-       case "${COMP_WORDS[0]},$COMP_CWORD" in
-       git-fetch*,1)
-               __gitcomp "$(__git_remotes)"
-               ;;
-       git,2)
+       if [ "$COMP_CWORD" = 2 ]; then
                __gitcomp "$(__git_remotes)"
-               ;;
-       *)
+       else
                case "$cur" in
                *:*)
                        local pfx=""
@@ -805,16 +815,10 @@ _git_fetch ()
                        __gitcomp "$(__git_refs)" "$pfx" "${cur#*:}"
                        ;;
                *)
-                       local remote
-                       case "${COMP_WORDS[0]}" in
-                       git-fetch) remote="${COMP_WORDS[1]}" ;;
-                       git)       remote="${COMP_WORDS[2]}" ;;
-                       esac
-                       __gitcomp "$(__git_refs2 "$remote")"
+                       __gitcomp "$(__git_refs2 "${COMP_WORDS[2]}")"
                        ;;
                esac
-               ;;
-       esac
+       fi
 }
 
 _git_format_patch ()
@@ -834,6 +838,8 @@ _git_format_patch ()
                        --not --all
                        --cover-letter
                        --no-prefix --src-prefix= --dst-prefix=
+                       --inline --suffix= --ignore-if-in-upstream
+                       --subject-prefix=
                        "
                return
                ;;
@@ -889,6 +895,7 @@ _git_help ()
                attributes cli core-tutorial cvs-migration
                diffcore gitk glossary hooks ignore modules
                repository-layout tutorial tutorial-2
+               workflows
                "
 }
 
@@ -940,6 +947,8 @@ _git_ls_tree ()
        __git_complete_file
 }
 
+__git_log_pretty_formats="oneline short medium full fuller email raw format:"
+
 _git_log ()
 {
        __git_has_doubledash && return
@@ -947,8 +956,7 @@ _git_log ()
        local cur="${COMP_WORDS[COMP_CWORD]}"
        case "$cur" in
        --pretty=*)
-               __gitcomp "
-                       oneline short medium full fuller email raw
+               __gitcomp "$__git_log_pretty_formats
                        " "" "${cur##--pretty=}"
                return
                ;;
@@ -977,6 +985,7 @@ _git_log ()
                        --color-words --walk-reflogs
                        --parents --children --full-history
                        --merge
+                       --inter-hunk-context=
                        "
                return
                ;;
@@ -1051,51 +1060,29 @@ _git_pull ()
 {
        local cur="${COMP_WORDS[COMP_CWORD]}"
 
-       case "${COMP_WORDS[0]},$COMP_CWORD" in
-       git-pull*,1)
-               __gitcomp "$(__git_remotes)"
-               ;;
-       git,2)
+       if [ "$COMP_CWORD" = 2 ]; then
                __gitcomp "$(__git_remotes)"
-               ;;
-       *)
-               local remote
-               case "${COMP_WORDS[0]}" in
-               git-pull)  remote="${COMP_WORDS[1]}" ;;
-               git)       remote="${COMP_WORDS[2]}" ;;
-               esac
-               __gitcomp "$(__git_refs "$remote")"
-               ;;
-       esac
+       else
+               __gitcomp "$(__git_refs "${COMP_WORDS[2]}")"
+       fi
 }
 
 _git_push ()
 {
        local cur="${COMP_WORDS[COMP_CWORD]}"
 
-       case "${COMP_WORDS[0]},$COMP_CWORD" in
-       git-push*,1)
+       if [ "$COMP_CWORD" = 2 ]; then
                __gitcomp "$(__git_remotes)"
-               ;;
-       git,2)
-               __gitcomp "$(__git_remotes)"
-               ;;
-       *)
+       else
                case "$cur" in
                *:*)
-                       local remote
-                       case "${COMP_WORDS[0]}" in
-                       git-push)  remote="${COMP_WORDS[1]}" ;;
-                       git)       remote="${COMP_WORDS[2]}" ;;
-                       esac
-
                        local pfx=""
                        case "$COMP_WORDBREAKS" in
                        *:*) : great ;;
                        *)   pfx="${cur%%:*}:" ;;
                        esac
 
-                       __gitcomp "$(__git_refs "$remote")" "$pfx" "${cur#*:}"
+                       __gitcomp "$(__git_refs "${COMP_WORDS[2]}")" "$pfx" "${cur#*:}"
                        ;;
                +*)
                        __gitcomp "$(__git_refs)" + "${cur#+}"
@@ -1104,8 +1091,7 @@ _git_push ()
                        __gitcomp "$(__git_refs)"
                        ;;
                esac
-               ;;
-       esac
+       fi
 }
 
 _git_rebase ()
@@ -1143,7 +1129,8 @@ _git_send_email ()
                        --no-suppress-from --no-thread --quiet
                        --signed-off-by-cc --smtp-pass --smtp-server
                        --smtp-server-port --smtp-ssl --smtp-user --subject
-                       --suppress-cc --suppress-from --thread --to"
+                       --suppress-cc --suppress-from --thread --to
+                       --validate --no-validate"
                return
                ;;
        esac
@@ -1187,7 +1174,7 @@ _git_config ()
                ;;
        color.*.*)
                __gitcomp "
-                       black red green yellow blue magenta cyan white
+                       normal black red green yellow blue magenta cyan white
                        bold dim ul blink reverse
                        "
                return
@@ -1211,7 +1198,7 @@ _git_config ()
        branch.*.*)
                local pfx="${cur%.*}."
                cur="${cur##*.}"
-               __gitcomp "remote merge" "$pfx" "$cur"
+               __gitcomp "remote merge mergeoptions" "$pfx" "$cur"
                return
                ;;
        branch.*)
@@ -1224,7 +1211,7 @@ _git_config ()
                local pfx="${cur%.*}."
                cur="${cur##*.}"
                __gitcomp "
-                       url fetch push skipDefaultUpdate
+                       url proxy fetch push mirror skipDefaultUpdate
                        receivepack uploadpack tagopt
                        " "$pfx" "$cur"
                return
@@ -1238,85 +1225,161 @@ _git_config ()
        esac
        __gitcomp "
                apply.whitespace
-               core.fileMode
-               core.gitProxy
-               core.ignoreStat
-               core.preferSymlinkRefs
-               core.logAllRefUpdates
-               core.loosecompression
-               core.repositoryFormatVersion
-               core.sharedRepository
-               core.warnAmbiguousRefs
-               core.compression
-               core.packedGitWindowSize
-               core.packedGitLimit
+               branch.autosetupmerge
+               branch.autosetuprebase
                clean.requireForce
                color.branch
                color.branch.current
                color.branch.local
-               color.branch.remote
                color.branch.plain
+               color.branch.remote
                color.diff
-               color.diff.plain
-               color.diff.meta
+               color.diff.commit
                color.diff.frag
-               color.diff.old
+               color.diff.meta
                color.diff.new
-               color.diff.commit
+               color.diff.old
+               color.diff.plain
                color.diff.whitespace
+               color.interactive
+               color.interactive.header
+               color.interactive.help
+               color.interactive.prompt
                color.pager
                color.status
-               color.status.header
                color.status.added
                color.status.changed
+               color.status.header
+               color.status.nobranch
                color.status.untracked
+               color.status.updated
+               color.ui
+               commit.template
+               core.autocrlf
+               core.bare
+               core.compression
+               core.deltaBaseCacheLimit
+               core.editor
+               core.excludesfile
+               core.fileMode
+               core.fsyncobjectfiles
+               core.gitProxy
+               core.ignoreCygwinFSTricks
+               core.ignoreStat
+               core.logAllRefUpdates
+               core.loosecompression
+               core.packedGitLimit
+               core.packedGitWindowSize
+               core.pager
+               core.preferSymlinkRefs
+               core.preloadindex
+               core.quotepath
+               core.repositoryFormatVersion
+               core.safecrlf
+               core.sharedRepository
+               core.symlinks
+               core.trustctime
+               core.warnAmbiguousRefs
+               core.whitespace
+               core.worktree
+               diff.autorefreshindex
+               diff.external
+               diff.mnemonicprefix
                diff.renameLimit
+               diff.renameLimit.
                diff.renames
                fetch.unpackLimit
                format.headers
-               format.subjectprefix
-               gitcvs.enabled
-               gitcvs.logfile
-               gitcvs.allbinary
-               gitcvs.dbname gitcvs.dbdriver gitcvs.dbuser gitcvs.dbpass
-               gitcvs.dbtablenameprefix
+               format.numbered
+               format.pretty
+               format.suffix
+               gc.aggressiveWindow
+               gc.auto
+               gc.autopacklimit
                gc.packrefs
+               gc.pruneexpire
                gc.reflogexpire
                gc.reflogexpireunreachable
                gc.rerereresolved
                gc.rerereunresolved
-               http.sslVerify
-               http.sslCert
-               http.sslKey
-               http.sslCAInfo
-               http.sslCAPath
-               http.maxRequests
+               gitcvs.allbinary
+               gitcvs.dbTableNamePrefix
+               gitcvs.dbdriver
+               gitcvs.dbname
+               gitcvs.dbpass
+               gitcvs.dbuser
+               gitcvs.enabled
+               gitcvs.logfile
+               gitcvs.usecrlfattr
+               gui.blamehistoryctx
+               gui.commitmsgwidth
+               gui.copyblamethreshold
+               gui.diffcontext
+               gui.encoding
+               gui.fastcopyblame
+               gui.matchtrackingbranch
+               gui.newbranchtemplate
+               gui.pruneduringfetch
+               gui.spellingdictionary
+               gui.trustmtime
+               help.autocorrect
+               help.browser
+               help.format
                http.lowSpeedLimit
                http.lowSpeedTime
+               http.maxRequests
                http.noEPSV
+               http.proxy
+               http.sslCAInfo
+               http.sslCAPath
+               http.sslCert
+               http.sslKey
+               http.sslVerify
                i18n.commitEncoding
                i18n.logOutputEncoding
+               instaweb.browser
+               instaweb.httpd
+               instaweb.local
+               instaweb.modulepath
+               instaweb.port
+               log.date
                log.showroot
+               man.viewer
+               merge.conflictstyle
+               merge.log
+               merge.renameLimit
+               merge.stat
                merge.tool
-               merge.summary
                merge.verbosity
-               pack.window
-               pack.depth
-               pack.windowMemory
+               mergetool.keepBackup
                pack.compression
-               pack.deltaCacheSize
                pack.deltaCacheLimit
+               pack.deltaCacheSize
+               pack.depth
+               pack.indexVersion
+               pack.packSizeLimit
+               pack.threads
+               pack.window
+               pack.windowMemory
                pull.octopus
                pull.twohead
-               repack.useDeltaBaseOffset
+               receive.denyCurrentBranch
+               receive.denyDeletes
+               receive.denyNonFastForwards
+               receive.fsckObjects
+               receive.unpackLimit
+               repack.usedeltabaseoffset
+               rerere.autoupdate
+               rerere.enabled
                showbranch.default
+               status.relativePaths
+               status.showUntrackedFiles
                tar.umask
                transfer.unpackLimit
-               receive.unpackLimit
-               receive.denyNonFastForwards
-               user.name
                user.email
+               user.name
                user.signingkey
+               web.browser
                branch. remote.
        "
 }
@@ -1359,7 +1422,7 @@ _git_reset ()
        local cur="${COMP_WORDS[COMP_CWORD]}"
        case "$cur" in
        --*)
-               __gitcomp "--mixed --hard --soft"
+               __gitcomp "--merge --mixed --hard --soft"
                return
                ;;
        esac
@@ -1375,7 +1438,7 @@ _git_revert ()
                return
                ;;
        esac
-       COMPREPLY=()
+       __gitcomp "$(__git_refs)"
 }
 
 _git_rm ()
@@ -1416,11 +1479,12 @@ _git_shortlog ()
 
 _git_show ()
 {
+       __git_has_doubledash && return
+
        local cur="${COMP_WORDS[COMP_CWORD]}"
        case "$cur" in
        --pretty=*)
-               __gitcomp "
-                       oneline short medium full fuller email raw
+               __gitcomp "$__git_log_pretty_formats
                        " "" "${cur##--pretty=}"
                return
                ;;
@@ -1481,7 +1545,7 @@ _git_submodule ()
 {
        __git_has_doubledash && return
 
-       local subcommands="add status init update"
+       local subcommands="add status init update summary foreach sync"
        if [ -z "$(__git_find_subcommand "$subcommands")" ]; then
                local cur="${COMP_WORDS[COMP_CWORD]}"
                case "$cur" in
@@ -1595,7 +1659,7 @@ _git_tag ()
        -m|-F)
                COMPREPLY=()
                ;;
-       -*|tag|git-tag)
+       -*|tag)
                if [ $f = 1 ]; then
                        __gitcomp "$(__git_tags)"
                else
@@ -1626,7 +1690,6 @@ _git ()
 
        if [ -z "$command" ]; then
                case "${COMP_WORDS[COMP_CWORD]}" in
-               --*=*) COMPREPLY=() ;;
                --*)   __gitcomp "
                        --paginate
                        --no-pager
@@ -1690,6 +1753,7 @@ _git ()
        show)        _git_show ;;
        show-branch) _git_show_branch ;;
        stash)       _git_stash ;;
+       stage)       _git_add ;;
        submodule)   _git_submodule ;;
        svn)         _git_svn ;;
        tag)         _git_tag ;;
@@ -1717,13 +1781,16 @@ _gitk ()
        __git_complete_revlist
 }
 
-complete -o default -o nospace -F _git git
-complete -o default -o nospace -F _gitk gitk
+complete -o bashdefault -o default -o nospace -F _git git 2>/dev/null \
+       || complete -o default -o nospace -F _git git
+complete -o bashdefault -o default -o nospace -F _gitk gitk 2>/dev/null \
+       || complete -o default -o nospace -F _gitk gitk
 
 # The following are necessary only for Cygwin, and only are needed
 # when the user has tab-completed the executable name and consequently
 # included the '.exe' suffix.
 #
 if [ Cygwin = "$(uname -o 2>/dev/null)" ]; then
-complete -o default -o nospace -F _git git.exe
+complete -o bashdefault -o default -o nospace -F _git git.exe 2>/dev/null \
+       || complete -o default -o nospace -F _git git.exe
 fi