Module Name: src
Committed By: kre
Date: Sat Apr 21 23:01:29 UTC 2018
Modified Files:
src/bin/sh: arithmetic.c
Log Message:
In uses like $(( var )) (un-dollared vars in arithmetic) we allow
leading whitespace in the value of var (because strtoimax() does)
but did not allow trailing whitespace. The effect is that some
cases where $(( ${var:-0} )) would work do not work without the $
expansion.
Fix that - allow trailing whitespace. However, continue to insist
upon at least one digit (a non-null var that contains nothing but
whitespace is still an error).
Note: posix is not helpful here, it simply requires that the variable
contain "a value that forms a valid integer constant" (with an optional
+ or - sign).
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/bin/sh/arithmetic.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.