1.

Solve : is it a bug??

Answer»

Can SOMEONE tell me what's going on with this?
If I run this from the command line by typing the file NAME, it works and prints the "yes" (assuming I press y).
Quote

C:\Documents and Settings\user\Desktop>test
y
[y]
_ans=y
yes
Press any key to continue . . .
But, if I double click the bat file to open, I get this:
Quote
y
[]
_ans=y
Press any key to continue . . .

I'm pulling my hair out trying to figure out what's wrong. The outer if statement (simplified for troubleshooting) also has something to do with it, but I need it.

Code: [Select]@echo off

IF 1==1 (
SET /P _ans=
echo [%_ans%]
SET _ans
IF /i "%_ans%" == "y" (
echo yes
)
)
pause
This may HELP. I added a prompt messages. Not sure why you wouldn't have one when requesting input. Also what is the purpose of the outer if statement?

Code: [Select]@echo off

if 1==1 (
set /p _ans=Prompt goes here:
call echo [%%_ans%%]
set _ans
call if /i "%_ans%"=="y" (
echo yes
)
)
pause


Code: [Select][quote author=Sidewinder link=topic=115488.msg771696#msg771696 date=1296228053]
what is the purpose of the outer [b]if[/b] statement?
Since the test "IF 1==1" will always be satisfied I fail to see the point of it.

What's with all that CALL stuff?


IGNORING the redundant outer IF test... phatpaul, clearly you have noticed the problem of setting and expanding VARIABLES inside parentheses, but equally clearly you are not aware of the solution - delayed expansion. Google for more information.
Code: [Select]setlocal enabledelayedexpansion
if 1==1 (
set /p _ans=Prompt goes here:
echo [!_ans!]
if /i "!_ans!"=="y" (
echo yes
)
)


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