Merge branch 'da/difftool-updates'
authorJunio C Hamano <gitster@pobox.com>
Mon, 27 Aug 2012 18:55:16 +0000 (11:55 -0700)
committerJunio C Hamano <gitster@pobox.com>
Mon, 27 Aug 2012 18:55:17 +0000 (11:55 -0700)
"git difftool --dir-diff" learned to use symbolic links to prepare
temporary copy of the working tree when available.

* da/difftool-updates:
difftool: silence warning
Add Code Compare v2.80.4 as a merge / diff tool for Windows
mergetool,difftool: Document --tool-help consistently
difftool: Disable --symlinks on cygwin
difftool: Handle compare() returning -1
difftool: Wrap long lines for readability
difftool: Check all return codes from compare()
difftool: Handle finding mergetools/ in a path with spaces
difftool: Use symlinks when diffing against the worktree
difftool: Call the temp directory "git-difftool"
difftool: Move option values into a hash
difftool: Eliminate global variables
difftool: Simplify print_tool_help()

1  2 
Documentation/git-mergetool.txt
contrib/completion/git-completion.bash
git-mergetool--lib.sh
index d7207bd9b9bba59a0e1f97341fb77927026e1b52,77dfdab2de1beea55928fa4b0209ab895c1b5cce..6b563c500f660486951cbcac62876bbda5cc3975
@@@ -27,9 -27,9 +27,9 @@@ OPTION
  -t <tool>::
  --tool=<tool>::
        Use the merge resolution program specified by <tool>.
 -      Valid merge tools are:
 -      araxis, bc3, diffuse, ecmerge, emerge, gvimdiff, kdiff3,
 -      meld, opendiff, p4merge, tkdiff, tortoisemerge, vimdiff and xxdiff.
 +      Valid values include emerge, gvimdiff, kdiff3,
 +      meld, vimdiff, and tortoisemerge. Run `git mergetool --tool-help`
 +      for the list of valid <tool> settings.
  +
  If a merge resolution program is not specified, 'git mergetool'
  will use the configuration variable `merge.tool`.  If the
@@@ -64,6 -64,9 +64,9 @@@ variable `mergetool.<tool>.trustExitCod
  Otherwise, 'git mergetool' will prompt the user to indicate the
  success of the resolution after the custom tool has exited.
  
+ --tool-help::
+       Print a list of merge tools that may be used with `--tool`.
  -y::
  --no-prompt::
        Don't prompt before each invocation of the merge resolution
index ffedce751c80eac032843f6ecad50246cfc28035,820ac738c6032fc8787ff86d1617e0c29017d76e..222b804ce4d5314b7eaff73f51291cff3903662d
mode 100644,100755..100644
  #    1) Copy this file to somewhere (e.g. ~/.git-completion.sh).
  #    2) Add the following line to your .bashrc/.zshrc:
  #        source ~/.git-completion.sh
 -#
 -#    3) Consider changing your PS1 to also show the current branch:
 -#         Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
 -#         ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
 -#
 -#       The argument to __git_ps1 will be displayed only if you
 -#       are currently in a git repository.  The %s token will be
 -#       the name of the current branch.
 -#
 -#       In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty
 -#       value, unstaged (*) and staged (+) changes will be shown next
 -#       to the branch name.  You can configure this per-repository
 -#       with the bash.showDirtyState variable, which defaults to true
 -#       once GIT_PS1_SHOWDIRTYSTATE is enabled.
 -#
 -#       You can also see if currently something is stashed, by setting
 -#       GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
 -#       then a '$' will be shown next to the branch name.
 -#
 -#       If you would like to see if there're untracked files, then you can
 -#       set GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're
 -#       untracked files, then a '%' will be shown next to the branch name.
 -#
 -#       If you would like to see the difference between HEAD and its
 -#       upstream, set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates
 -#       you are behind, ">" indicates you are ahead, and "<>"
 -#       indicates you have diverged.  You can further control
 -#       behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated
 -#       list of values:
 -#           verbose       show number of commits ahead/behind (+/-) upstream
 -#           legacy        don't use the '--count' option available in recent
 -#                         versions of git-rev-list
 -#           git           always compare HEAD to @{upstream}
 -#           svn           always compare HEAD to your SVN upstream
 -#       By default, __git_ps1 will compare HEAD to your SVN upstream
 -#       if it can find one, or @{upstream} otherwise.  Once you have
 -#       set GIT_PS1_SHOWUPSTREAM, you can override it on a
 -#       per-repository basis by setting the bash.showUpstream config
 -#       variable.
 -#
 +#    3) Consider changing your PS1 to also show the current branch,
 +#       see git-prompt.sh for details.
  
  if [[ -n ${ZSH_VERSION-} ]]; then
        autoload -U +X bashcompinit && bashcompinit
@@@ -36,14 -74,9 +36,14 @@@ esa
  # returns location of .git repo
  __gitdir ()
  {
 +      # Note: this function is duplicated in git-prompt.sh
 +      # When updating it, make sure you update the other one to match.
        if [ -z "${1-}" ]; then
                if [ -n "${__git_dir-}" ]; then
                        echo "$__git_dir"
 +              elif [ -n "${GIT_DIR-}" ]; then
 +                      test -d "${GIT_DIR-}" || return 1
 +                      echo "$GIT_DIR"
                elif [ -d .git ]; then
                        echo .git
                else
        fi
  }
  
 -# stores the divergence from upstream in $p
 -# used by GIT_PS1_SHOWUPSTREAM
 -__git_ps1_show_upstream ()
 -{
 -      local key value
 -      local svn_remote svn_url_pattern count n
 -      local upstream=git legacy="" verbose=""
 -
 -      svn_remote=()
 -      # get some config options from git-config
 -      local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
 -      while read -r key value; do
 -              case "$key" in
 -              bash.showupstream)
 -                      GIT_PS1_SHOWUPSTREAM="$value"
 -                      if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
 -                              p=""
 -                              return
 -                      fi
 -                      ;;
 -              svn-remote.*.url)
 -                      svn_remote[ $((${#svn_remote[@]} + 1)) ]="$value"
 -                      svn_url_pattern+="\\|$value"
 -                      upstream=svn+git # default upstream is SVN if available, else git
 -                      ;;
 -              esac
 -      done <<< "$output"
 -
 -      # parse configuration values
 -      for option in ${GIT_PS1_SHOWUPSTREAM}; do
 -              case "$option" in
 -              git|svn) upstream="$option" ;;
 -              verbose) verbose=1 ;;
 -              legacy)  legacy=1  ;;
 -              esac
 -      done
 -
 -      # Find our upstream
 -      case "$upstream" in
 -      git)    upstream="@{upstream}" ;;
 -      svn*)
 -              # get the upstream from the "git-svn-id: ..." in a commit message
 -              # (git-svn uses essentially the same procedure internally)
 -              local svn_upstream=($(git log --first-parent -1 \
 -                                      --grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
 -              if [[ 0 -ne ${#svn_upstream[@]} ]]; then
 -                      svn_upstream=${svn_upstream[ ${#svn_upstream[@]} - 2 ]}
 -                      svn_upstream=${svn_upstream%@*}
 -                      local n_stop="${#svn_remote[@]}"
 -                      for ((n=1; n <= n_stop; n++)); do
 -                              svn_upstream=${svn_upstream#${svn_remote[$n]}}
 -                      done
 -
 -                      if [[ -z "$svn_upstream" ]]; then
 -                              # default branch name for checkouts with no layout:
 -                              upstream=${GIT_SVN_ID:-git-svn}
 -                      else
 -                              upstream=${svn_upstream#/}
 -                      fi
 -              elif [[ "svn+git" = "$upstream" ]]; then
 -                      upstream="@{upstream}"
 -              fi
 -              ;;
 -      esac
 -
 -      # Find how many commits we are ahead/behind our upstream
 -      if [[ -z "$legacy" ]]; then
 -              count="$(git rev-list --count --left-right \
 -                              "$upstream"...HEAD 2>/dev/null)"
 -      else
 -              # produce equivalent output to --count for older versions of git
 -              local commits
 -              if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)"
 -              then
 -                      local commit behind=0 ahead=0
 -                      for commit in $commits
 -                      do
 -                              case "$commit" in
 -                              "<"*) ((behind++)) ;;
 -                              *)    ((ahead++))  ;;
 -                              esac
 -                      done
 -                      count="$behind  $ahead"
 -              else
 -                      count=""
 -              fi
 -      fi
 -
 -      # calculate the result
 -      if [[ -z "$verbose" ]]; then
 -              case "$count" in
 -              "") # no upstream
 -                      p="" ;;
 -              "0      0") # equal to upstream
 -                      p="=" ;;
 -              "0      "*) # ahead of upstream
 -                      p=">" ;;
 -              *"      0") # behind upstream
 -                      p="<" ;;
 -              *)          # diverged from upstream
 -                      p="<>" ;;
 -              esac
 -      else
 -              case "$count" in
 -              "") # no upstream
 -                      p="" ;;
 -              "0      0") # equal to upstream
 -                      p=" u=" ;;
 -              "0      "*) # ahead of upstream
 -                      p=" u+${count#0 }" ;;
 -              *"      0") # behind upstream
 -                      p=" u-${count%  0}" ;;
 -              *)          # diverged from upstream
 -                      p=" u+${count#* }-${count%      *}" ;;
 -              esac
 -      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="$(__gitdir)"
 -      if [ -n "$g" ]; then
 -              local r=""
 -              local b=""
 -              if [ -f "$g/rebase-merge/interactive" ]; then
 -                      r="|REBASE-i"
 -                      b="$(cat "$g/rebase-merge/head-name")"
 -              elif [ -d "$g/rebase-merge" ]; then
 -                      r="|REBASE-m"
 -                      b="$(cat "$g/rebase-merge/head-name")"
 -              else
 -                      if [ -d "$g/rebase-apply" ]; then
 -                              if [ -f "$g/rebase-apply/rebasing" ]; then
 -                                      r="|REBASE"
 -                              elif [ -f "$g/rebase-apply/applying" ]; then
 -                                      r="|AM"
 -                              else
 -                                      r="|AM/REBASE"
 -                              fi
 -                      elif [ -f "$g/MERGE_HEAD" ]; then
 -                              r="|MERGING"
 -                      elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
 -                              r="|CHERRY-PICKING"
 -                      elif [ -f "$g/BISECT_LOG" ]; then
 -                              r="|BISECTING"
 -                      fi
 -
 -                      b="$(git symbolic-ref HEAD 2>/dev/null)" || {
 -
 -                              b="$(
 -                              case "${GIT_PS1_DESCRIBE_STYLE-}" in
 -                              (contains)
 -                                      git describe --contains HEAD ;;
 -                              (branch)
 -                                      git describe --contains --all HEAD ;;
 -                              (describe)
 -                                      git describe HEAD ;;
 -                              (* | default)
 -                                      git describe --tags --exact-match HEAD ;;
 -                              esac 2>/dev/null)" ||
 -
 -                              b="$(cut -c1-7 "$g/HEAD" 2>/dev/null)..." ||
 -                              b="unknown"
 -                              b="($b)"
 -                      }
 -              fi
 -
 -              local w=""
 -              local i=""
 -              local s=""
 -              local u=""
 -              local c=""
 -              local p=""
 -
 -              if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
 -                      if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
 -                              c="BARE:"
 -                      else
 -                              b="GIT_DIR!"
 -                      fi
 -              elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
 -                      if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ]; then
 -                              if [ "$(git config --bool bash.showDirtyState)" != "false" ]; then
 -                                      git diff --no-ext-diff --quiet --exit-code || w="*"
 -                                      if git rev-parse --quiet --verify HEAD >/dev/null; then
 -                                              git diff-index --cached --quiet HEAD -- || i="+"
 -                                      else
 -                                              i="#"
 -                                      fi
 -                              fi
 -                      fi
 -                      if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
 -                              git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
 -                      fi
 -
 -                      if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ]; then
 -                              if [ -n "$(git ls-files --others --exclude-standard)" ]; then
 -                                      u="%"
 -                              fi
 -                      fi
 -
 -                      if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
 -                              __git_ps1_show_upstream
 -                      fi
 -              fi
 -
 -              local f="$w$i$s$u"
 -              printf -- "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r$p"
 -      fi
 -}
 -
  __gitcomp_1 ()
  {
        local c IFS=$' \t\n'
@@@ -1071,7 -1319,7 +1071,7 @@@ _git_diff (
  }
  
  __git_mergetools_common="diffuse ecmerge emerge kdiff3 meld opendiff
-                       tkdiff vimdiff gvimdiff xxdiff araxis p4merge bc3
+                       tkdiff vimdiff gvimdiff xxdiff araxis p4merge bc3 codecompare
  "
  
  _git_difftool ()
diff --combined git-mergetool--lib.sh
index f730253c0eac181ec8507d2c837d4ec85a0ae991,0bbfcb1440025427b5c9d6af83d8e96c3430aaca..54cb708254d38062983373c536589add648ae304
@@@ -111,7 -111,7 +111,7 @@@ run_merge_tool () 
        return $status
  }
  
 -guess_merge_tool () {
 +list_merge_tool_candidates () {
        if merge_mode
        then
                tools="tortoisemerge"
                else
                        tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
                fi
-               tools="$tools gvimdiff diffuse ecmerge p4merge araxis bc3"
+               tools="$tools gvimdiff diffuse ecmerge p4merge araxis bc3 codecompare"
        fi
        case "${VISUAL:-$EDITOR}" in
        *vim*)
                tools="$tools emerge vimdiff"
                ;;
        esac
 +}
 +
 +guess_merge_tool () {
 +      list_merge_tool_candidates
        echo >&2 "merge tool candidates: $tools"
  
        # Loop over each candidate and stop when a valid merge tool is found.