diff options
Diffstat (limited to 'bin/ed/README')
-rw-r--r-- | bin/ed/README | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/bin/ed/README b/bin/ed/README new file mode 100644 index 0000000..9dada65 --- /dev/null +++ b/bin/ed/README @@ -0,0 +1,22 @@ +ed is an 8-bit-clean, POSIX-compliant line editor. It should work with +any regular expression package that conforms to the POSIX interface +standard, such as GNU regex(3). + +If reliable signals are supported (e.g., POSIX sigaction(2)), it should +compile with little trouble. Otherwise, the macros spl1() and spl0() +should be redefined to disable interrupts. + +The following compiler directives are recognized: +GNU_REGEX - use with GNU regex(3) +DES - use to add encryption support (requires crypt(3)) +NO_REALLOC_NULL - use if realloc(3) does not accept a NULL pointer +BACKWARDS - use for backwards compatibility + +The file `POSIX' describes extensions to and deviations from the POSIX +standard. + +The ./test directory contains regression tests for ed. The README +file in that directory explains how to run these. + +For a description of the ed algorithm, see Kernighan and Plauger's book +"Software Tools in Pascal," Addison-Wesley, 1981. |