问题
Good afternoon,
I would like to add the simpliest tag into a file, using a CMD batchfile, but it seems that the double quotes are spoiling the party:
From other StackOverflow posts I am aware of the double quote state machine and the usage of ^" (^ as an escape character). Still I can't make it work:
Hereby my attempts (with their results):
C:\>echo <tag variable="value"> // very naïve
The syntax of the command is incorrect.
C:\>echo "<tag variable="value">" // let's use quotes for delimiting the string
"<tag variable="value">"
C:\>echo "<tag variable=^"value^">" // let's use the escape character
The system cannot find the path specified.
C:\>echo "<tag variable=^"value^"> // what if the state machine is not switched back?
The syntax of the command is incorrect.
C:\>echo "<tag variable=^"value"> // desperate people do weird things :-)
"<tag variable=^"value">
I have also done some tests using the escape character in front of the tag characters < and > (as those have their own significance in CMD) but also there no good results.
Also first putting the entry within a variable (set test="...") does not solve the issue.
As mentioned, I am getting desperate. The only thing I want to do is writing this into a text file:
<tag variable="value">
Can anybody help me out here?
Thanks in advance
回答1:
the characters you want to escape are not the " but the <.
Then the correct syntax is this one :
C:\>echo ^<tag variable="value"^>
回答2:
Shouldn't you use the "\" char to escape a double quote ? Like "echo "< tag blabla=\"value\" >" ?
EDIT
Seems like :
echo ^<tag variable=^"value^"^>
works fine !
回答3:
try with delayed expansion:
setlocal enableDelayedExpansion
set "tag_line=<tag variable="value">"
echo !tag_line!
来源：https://stackoverflow.com/questions/33015273/how-to-write-an-xml-tag-with-double-quotes-using-command-prompt-echo-command