To tilde or not to tilde
When writing batch FOR loops I've picked up a habit of using tildes in the variable placeholder names in the command portion of the script and enclose that with double quotes.
Example Syntax
FOR %%A IN ("*.*") DO ECHO "%%~A"
Reason
I usually write scripts like this as a standard whether or not they are truly needed without thought. I like how it strips the double quotes from the set portion of the loop and then adds them back explicitly in the command parameter portion of the loop.
Question
What are some reasons from others experience or perhaps officially documented somewhere why you would or would not want to use tildes for this reason with FOR loops via cmd or batch.
batch-file cmd.exe
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
add a comment |
When writing batch FOR loops I've picked up a habit of using tildes in the variable placeholder names in the command portion of the script and enclose that with double quotes.
Example Syntax
FOR %%A IN ("*.*") DO ECHO "%%~A"
Reason
I usually write scripts like this as a standard whether or not they are truly needed without thought. I like how it strips the double quotes from the set portion of the loop and then adds them back explicitly in the command parameter portion of the loop.
Question
What are some reasons from others experience or perhaps officially documented somewhere why you would or would not want to use tildes for this reason with FOR loops via cmd or batch.
batch-file cmd.exe
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
1
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07
add a comment |
When writing batch FOR loops I've picked up a habit of using tildes in the variable placeholder names in the command portion of the script and enclose that with double quotes.
Example Syntax
FOR %%A IN ("*.*") DO ECHO "%%~A"
Reason
I usually write scripts like this as a standard whether or not they are truly needed without thought. I like how it strips the double quotes from the set portion of the loop and then adds them back explicitly in the command parameter portion of the loop.
Question
What are some reasons from others experience or perhaps officially documented somewhere why you would or would not want to use tildes for this reason with FOR loops via cmd or batch.
batch-file cmd.exe
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
When writing batch FOR loops I've picked up a habit of using tildes in the variable placeholder names in the command portion of the script and enclose that with double quotes.
Example Syntax
FOR %%A IN ("*.*") DO ECHO "%%~A"
Reason
I usually write scripts like this as a standard whether or not they are truly needed without thought. I like how it strips the double quotes from the set portion of the loop and then adds them back explicitly in the command parameter portion of the loop.
Question
What are some reasons from others experience or perhaps officially documented somewhere why you would or would not want to use tildes for this reason with FOR loops via cmd or batch.
batch-file cmd.exe
batch-file cmd.exe
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
edited Jan 24 at 0:36
Pimp Juice IT
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
asked Jan 24 at 0:31
Pimp Juice ITPimp Juice IT
25k114177
25k114177
I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
1
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07
add a comment |
I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
1
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07
I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
1
1
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07
add a comment |
1 Answer
1
active
oldest
votes
In your exact use case it doesn't make a difference but also doesn't harm :
- as file names iterated by a wildcard are always returned unquoted.
When iterating some double quoted strings (especially cmd line args %*)
I'd always use them:
@Echo off
For %%A IN (
"this is a sentence"
two words
"some words"
) Do (
Echo with tilde: "%%~A"
Echo w/o tilde: "%%A"
Echo:
)
> SU1397704.cmd
with tilde: "this is a sentence"
w/o tilde: ""this is a sentence""
with tilde: "two"
w/o tilde: "two"
with tilde: "words"
w/o tilde: "words"
with tilde: "some words"
w/o tilde: ""some words""
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
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oldest
votes
active
oldest
votes
In your exact use case it doesn't make a difference but also doesn't harm :
- as file names iterated by a wildcard are always returned unquoted.
When iterating some double quoted strings (especially cmd line args %*)
I'd always use them:
@Echo off
For %%A IN (
"this is a sentence"
two words
"some words"
) Do (
Echo with tilde: "%%~A"
Echo w/o tilde: "%%A"
Echo:
)
> SU1397704.cmd
with tilde: "this is a sentence"
w/o tilde: ""this is a sentence""
with tilde: "two"
w/o tilde: "two"
with tilde: "words"
w/o tilde: "words"
with tilde: "some words"
w/o tilde: ""some words""
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
add a comment |
In your exact use case it doesn't make a difference but also doesn't harm :
- as file names iterated by a wildcard are always returned unquoted.
When iterating some double quoted strings (especially cmd line args %*)
I'd always use them:
@Echo off
For %%A IN (
"this is a sentence"
two words
"some words"
) Do (
Echo with tilde: "%%~A"
Echo w/o tilde: "%%A"
Echo:
)
> SU1397704.cmd
with tilde: "this is a sentence"
w/o tilde: ""this is a sentence""
with tilde: "two"
w/o tilde: "two"
with tilde: "words"
w/o tilde: "words"
with tilde: "some words"
w/o tilde: ""some words""
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
add a comment |
In your exact use case it doesn't make a difference but also doesn't harm :
- as file names iterated by a wildcard are always returned unquoted.
When iterating some double quoted strings (especially cmd line args %*)
I'd always use them:
@Echo off
For %%A IN (
"this is a sentence"
two words
"some words"
) Do (
Echo with tilde: "%%~A"
Echo w/o tilde: "%%A"
Echo:
)
> SU1397704.cmd
with tilde: "this is a sentence"
w/o tilde: ""this is a sentence""
with tilde: "two"
w/o tilde: "two"
with tilde: "words"
w/o tilde: "words"
with tilde: "some words"
w/o tilde: ""some words""
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
In your exact use case it doesn't make a difference but also doesn't harm :
- as file names iterated by a wildcard are always returned unquoted.
When iterating some double quoted strings (especially cmd line args %*)
I'd always use them:
@Echo off
For %%A IN (
"this is a sentence"
two words
"some words"
) Do (
Echo with tilde: "%%~A"
Echo w/o tilde: "%%A"
Echo:
)
> SU1397704.cmd
with tilde: "this is a sentence"
w/o tilde: ""this is a sentence""
with tilde: "two"
w/o tilde: "two"
with tilde: "words"
w/o tilde: "words"
with tilde: "some words"
w/o tilde: ""some words""
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
answered Jan 24 at 12:52
LotPingsLotPings
5,1451823
5,1451823
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
add a comment |
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
Yes, that's the reason I use them based on habit because I was hit by that with the iteration of values having spaces!!
– Pimp Juice IT
Jan 24 at 13:17
add a comment |
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I’ve never used them, never needed to. I wouldn’t, since I don’t want to glance at them and think they have anything to do with the user’s home folder. Stylistic choice, curious to see what others say.
– primohacker
Jan 24 at 0:59
1
Generally I don’t like to add little “tiddlybits” to commands just for shiggles.
– primohacker
Jan 24 at 1:07