Merge branch 'jc/fetch-tags-doc'
[gitweb.git] / contrib / completion / git-prompt.sh
index ce67eb75a4f702a976000a94c087678f9a6d7827..9b074e148d980e5b96819345be23f9b614db849d 100644 (file)
 #    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
 #    2) Add the following line to your .bashrc/.zshrc:
 #        source ~/.git-prompt.sh
-#    3a) In ~/.bashrc set PROMPT_COMMAND=__git_ps1
-#        To customize the prompt, provide start/end arguments
-#        PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
-#    3b) Alternatively change your PS1 to call __git_ps1 as
+#    3a) Change your PS1 to call __git_ps1 as
 #        command-substitution:
 #        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
 #        ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
-#        the optional argument will be used as format string
+#        the optional argument will be used as format string.
+#    3b) Alternatively, if you are using bash, __git_ps1 can be
+#        used for PROMPT_COMMAND with two parameters, <pre> and
+#        <post>, which are strings you would put in $PS1 before
+#        and after the status string generated by the git-prompt
+#        machinery.  e.g.
+#           PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
+#        will show username, at-sign, host, colon, cwd, then
+#        various status string, followed by dollar and SP, as
+#        your prompt.
 #
 # 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
 # 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.
+#
+# If you would like to see more information about the identity of
+# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
+# to one of these values:
+#
+#     contains      relative to newer annotated tag (v1.6.3.2~35)
+#     branch        relative to newer tag or branch (master~4)
+#     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
+#     default       exactly matching tag
+#
+# If you would like a colored hint about the current dirty state, set
+# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
+# the colored output of "git status -sb".
 
 # __gitdir accepts 0 or 1 arguments (i.e., location)
 # returns location of .git repo
@@ -207,10 +226,11 @@ __git_ps1_show_upstream ()
 # in that case it _sets_ PS1. The arguments are parts of a PS1 string.
 # when both arguments are given, the first is prepended and the second appended
 # to the state string when assigned to PS1.
+# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 __git_ps1 ()
 {
        local pcmode=no
-       #defaults/examples:
+       local detached=no
        local ps1pc_start='\u@\h:\w '
        local ps1pc_end='\$ '
        local printf_format=' (%s)'
@@ -259,7 +279,7 @@ __git_ps1 ()
                        fi
 
                        b="$(git symbolic-ref HEAD 2>/dev/null)" || {
-
+                               detached=yes
                                b="$(
                                case "${GIT_PS1_DESCRIBE_STYLE-}" in
                                (contains)
@@ -319,10 +339,48 @@ __git_ps1 ()
 
                local f="$w$i$s$u"
                if [ $pcmode = yes ]; then
-                       PS1="$ps1pc_start("
-                       PS1="$PS1$c${b##refs/heads/}${f:+ $f}$r$p"
-                       PS1="$PS1)$ps1pc_end"
+                       if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+                               local c_red='\e[31m'
+                               local c_green='\e[32m'
+                               local c_lblue='\e[1;34m'
+                               local c_clear='\e[0m'
+                               local bad_color=$c_red
+                               local ok_color=$c_green
+                               local branch_color="$c_clear"
+                               local flags_color="$c_lblue"
+                               local branchstring="$c${b##refs/heads/}"
+
+                               if [ $detached = no ]; then
+                                       branch_color="$ok_color"
+                               else
+                                       branch_color="$bad_color"
+                               fi
+
+                               # Setting PS1 directly with \[ and \] around colors
+                               # is necessary to prevent wrapping issues!
+                               PS1="$ps1pc_start (\[$branch_color\]$branchstring\[$c_clear\]"
+
+                               if [ -n "$w$i$s$u$r$p" ]; then
+                                       PS1="$PS1 "
+                               fi
+                               if [ "$w" = "*" ]; then
+                                       PS1="$PS1\[$bad_color\]$w"
+                               fi
+                               if [ -n "$i" ]; then
+                                       PS1="$PS1\[$ok_color\]$i"
+                               fi
+                               if [ -n "$s" ]; then
+                                       PS1="$PS1\[$flags_color\]$s"
+                               fi
+                               if [ -n "$u" ]; then
+                                       PS1="$PS1\[$bad_color\]$u"
+                               fi
+                               PS1="$PS1\[$c_clear\]$r$p)$ps1pc_end"
+                       else
+                               PS1="$ps1pc_start ($c${b##refs/heads/}${f:+ $f}$r$p)$ps1pc_end"
+                       fi
                else
+                       # NO color option unless in PROMPT_COMMAND mode
                        printf -- "$printf_format" "$c${b##refs/heads/}${f:+ $f}$r$p"
                fi
        fi