使用批处理脚本从字符串中删除特定字符

Question

i want to remove only a specific character into a string and only one time. for example, if I have this file:

"1234 + test.txt"

i want to remove "+" character. my problem is that I don't know how many "+" could be in filename; by the way, I want to remove only the first:

"1234 ++ test + hello + world.txt"

need to be:

"1234 + test + hello + world.txt"

I need to do this with a bat script. I have some problems to use correctly "token,delims" parameters....

edit: I've a problem with Edoro's solution. if filename is "++plus--.txt", %left% is "plus--.txt" and %right% is +plus--.txt

Answer 1

pure batch

@echo off &setlocal
set "string=1234 ++ test + hello + world.txt"

for /f "delims=+" %%i in ("%string%") do set "left=%%i"
set "right=%string:*+=%"
set "new=%left%%right%"
echo %new%

..output is:

1234 + test + hello + world.txt

Answer 2

通过sed脚本：

echo "1234 + test + hello + world.txt" | sed 's/+//'