I want to pass a string contains the comma, such as "A,B,C", to the DOS batch file. I want the whole string to be treated as ONE, not THREE separated parameters, how can I accomplish this?

thanksexplain further, what COMMAND are using the delims with ?This any use?

Quote

C:\>type testme.bat
@echo off
echo a,b,c > test.txt
echo d,e,f >> test.txt
echo H,i,j >> test.txt

for /f "delims==" %%L in (test.txt) do (
echo %%L
)

C:\>testme.bat
a,b,c
d,e,f
h,i,j

> type test.bat
@echo off

external_program /para:"%1"

here is the example:

Quote

> type test.bat
@echo off

external_program /para:"%1"

What I expect is:

test A,B,C

the batch file will call that external program in the format of
external_program /para:"A,B,C"

C:\>type test2.bat
@echo off
echo %1
echo %~1
echo "%~1"
echo external_program /para:"%~1"
echo external_program /para:%1

C:\>test2.bat a,b,c
a
a
"a"
external_program /para:"a"
external_program /para:a

C:\>test2.bat "a,b,c"
"a,b,c"
a,b,c
"a,b,c"
external_program /para:"a,b,c"
external_program /para:"a,b,c"

C:\>type test2.bat
@echo off
echo %1
echo %~1
echo "%~1"
echo external_program /para:"%~1"
echo external_program /para:%1

C:\>test2.bat a,b,c
a
a
"a"
external_program /para:"a"
external_program /para:a

C:\>test2.bat "a,b,c"
"a,b,c"
a,b,c
"a,b,c"
external_program /para:"a,b,c"
external_program /para:"a,b,c"