fix _git_ps1 command not found situation

bash_tools/theme_bash.sh

@@ -3,6 +3,20 @@
 export GIT_PS1_SHOWDIRTYSTATE=1
 if [[ $(type -t foo) != function ]]; then
     __git_ps1(){
+
+        local branch=`git branch 2>/dev/null | grep '*' | sed 's/* \(.*\)/\1/'`
+        
+        if [ $? ]; then
+            status=`git status 2>/dev/null`
+            local stage_info="not staged for commit"
+            local commit_info="Changes to be committed"
+
+            local stage_sign=''
+            local commit_sign=''
+            [[ "$status" == *"$stage_info"* ]] && stage_sign=" *"
+            [[ "$status" == *"$commit_info"* ]] && commit_sign=" +"
+            echo "(${branch}${stage_sign}${commit_sign})"
+        fi
     }
 fi
 export PS1=' \[\e[0;32m\]\w\[\e[01;31m\]$(__git_ps1 "(%s)")\[\e[00m\]$ '

test.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+a="asfsdfs
+dfdfd
+fdfff
+ggg"
+
+grep ggg $a