the attached patch adds quoting to help strings and code snippets, following the autoconf quotation rule of thumb "One pair of quotes per pair of parentheses". checked that the generated files are identical.
applied the changes for 2.7 and 3.2. there is a diff for the regenerated configure like -rm -f -r conftest* +rm -f conftest* I explicitely used a vanilla autoconf-2.61 download for regenerating the configure script. Why the diff?