:group 'ispell)
-(defcustom ispell-grep-command "egrep"
+(defcustom ispell-grep-command
+ ;; MS-Windows/MS-DOS have `egrep' as a Unix shell script, so they
+ ;; cannot invoke it. Use "grep -E" instead (see ispell-grep-options
+ ;; below).
+ (if (memq system-type '(windows-nt ms-dos)) "grep" "egrep")
"Name of the grep command for search processes."
:type 'string
:group 'ispell)
-(defcustom ispell-grep-options "-i"
+(defcustom ispell-grep-options
+ (if (memq system-type '(windows-nt ms-dos)) "-Ei" "-i")
"String of options to use when running the program in `ispell-grep-command'.
Should probably be \"-i\" or \"-e\".
Some machines (like the NeXT) don't support \"-i\""