Preview what will happen when you svn update

svn-up-preview.sh

#!/bin/bash

WD="."

function extract_revision()
{
    REV=$(svn info $1|grep "Revision:"|cut -d ":" -f 2-|sed -e 's/^[ ]*//')
}

function split_op_and_loc()
{
    OP=$(echo $1|cut -d " " -f 1)
    LOC=$(echo $1|cut -d " " -f 2-|sed -e 's/^[ ]*//')
}

function extract_repo_url()
{
    REPO=$(svn info|grep "URL:"|cut -d ":" -f 2-|sed -e 's/^[ ]*//')
}

if [ -z "$1" -o "$1" != "-v" ]; then
    svn merge --dry-run -r BASE:HEAD $WD
else
    IFSO=$IFS
    IFS=$'\n'
    FILES=$(svn merge --dry-run -r BASE:HEAD $WD)
    extract_repo_url

    for FILE in $FILES; do
        split_op_and_loc $FILE

        case "$OP" in
        A)
            echo "***** NEW FILE: ${LOC}"
            ;;
        U)
            echo "***** UPDATE: ${LOC}"
            extract_revision $LOC
            ;;
        C)
            echo "***** CONFLICT: ${LOC}"
            extract_revision $LOC
            ;;
        *)
            echo "Couldn't understand: ${OP} ${LOC}"
        esac

        if [ ! -z "$REV" ]; then
            svn diff -r $REV:HEAD $REPO/$LOC
            unset REV
        fi
    done
    IFS=$IFSO
fi

Doesn't understand other than A, U and C statuses, because that's all I needed so far, but they can be easily added. Also only works based on your current working directory.