Ambiguity in autoconf info documentation

[Reuben Thomas]

I have the manual for 2.59.

It contains the paragraph:

     The option's argument is available to the shell commands
     ACTION-IF-GIVEN in the shell variable `enableval', which is
     actually just the value of the shell variable `enable_FEATURE',
     with any `-' characters changed into `_'.  You may use that
     variable instead, if you wish.  The HELP-STRING argument is like
     that of `AC_ARG_WITH' (*note External Software::).

It is ambiguous whether the phrase "with any `-' characters changed into 
`_'" refers to the FEATURE name, and hence the variable name (which appears 
to be the case) or its value.

I suggest changing the text starting "shell variable" to:

"shell variable named `enable_FEATURE', with any `-' characters in FEATURE 
changed into `_'."

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