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request. So the command: /pattern/;/ finds the second line containing "pattern" after the current line. Caveat: The commands `st' and `sr' are now both legal and have very different meanings. This is because ed(1) extends POSIX to include the old Berkeley syntax s[rgp]*. (So should two slashes still be required in the case of the substitute command, as SunOS ed does?) |
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| .. | ||
| test | ||
| buf.c | ||
| cbc.c | ||
| ed.1 | ||
| ed.h | ||
| Makefile | ||
| POSIX | ||
| re.c | ||
| README | ||
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: 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.