修改pre-commit解决git中的 trailing whitespace问题-windows平台

#!/bin/sh
#
# An example hook script to verify what is about to be committed.
# Called by git-commit with no arguments.  The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# To enable this hook, make this file executable.# This is slightly modified from Andrew Morton's Perfect Patch.
# Lines you introduce should not have trailing whitespace.
# Also check for an indentation that has SP before a TAB.if git-rev-parse --verify HEAD 2>/dev/null
then
 git-diff-index -p -M --cached HEAD --
else
 # NEEDSWORK: we should produce a diff with an empty tree here
 # if we want to do the same verification for the initial import.
 :
fi |
  # Find files with trailing whitespace
  for FILE in `exec git diff-index --check --cached $against -- | sed '/^[+-]/d' | sed -r 's/:[0-9]+:.*//' | uniq` ; do
     # Fix them!
     sed -i 's/[[:space:]]*$//' "$FILE"
  done
 
perl -e '
    my $found_bad = 0;
    my $filename;
    my $reported_filename = "";
    my $lineno;
    sub bad_line {
 my ($why, $line) = @_;
 if (!$found_bad) {
     print STDERR "*\n";
     print STDERR "* You have some suspicious patch lines:\n";
     print STDERR "*\n";
     $found_bad = 1;
 }
 if ($reported_filename ne $filename) {
     print STDERR "* In $filename\n";
     $reported_filename = $filename;
 }
 print STDERR "* $why (line $lineno)\n";
 print STDERR "$filename:$lineno:$line\n";
    }
    while (<>) {
 if (m|^diff --git a/(.*) b/\1$|) {
     $filename = $1;
     next;
 }
 if (/^@@ -\S+ \+(\d+)/) {
     $lineno = $1 - 1;
     next;
 }
 if (/^ /) {
     $lineno++;
     next;
 }
 if (s/^\+//) {
     $lineno++;
     chomp;
     if (/\s$/) {
  bad_line("trailing whitespace", $_);
     }
     if (/^\s* \t/) {
  bad_line("indent SP followed by a TAB", $_);
     }
     if (/^([<>])\1{6} |^={7}$/) {
  bad_line("unresolved merge conflict", $_);
     }
 }
    }
    exit($found_bad);
' 对pre-commit感兴趣的可以去看看git的hook方面的东西。似乎类似于vc里面 编译前或编译后指定要做的工作