Index: make-stds.texi
===================================================================
RCS file: /sources/gnustandards/gnustandards/make-stds.texi,v
retrieving revision 1.69
diff -c -r1.69 make-stds.texi
*** make-stds.texi	1 Jun 2020 17:53:39 -0000	1.69
--- make-stds.texi	26 Dec 2020 23:08:50 -0000
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*** 160,166 ****
  @c mkfifo mknod tee uname
  
  @example
! awk cat cmp cp diff echo egrep expr false grep install-info ln ls
  mkdir mv printf pwd rm rmdir sed sleep sort tar test touch tr true
  @end example
  
--- 160,166 ----
  @c mkfifo mknod tee uname
  
  @example
! awk cat cmp cp diff echo expr false grep ln ls
  mkdir mv printf pwd rm rmdir sed sleep sort tar test touch tr true
  @end example
  
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*** 174,179 ****
--- 174,182 ----
  for parallel execution.  For a list of known incompatibilities, see
  @ref{Portable Shell, Portable Shell Programming,, autoconf, Autoconf}.
  
+ Programs like @code{egrep} and @code{install-info} can be used in
+ rules that have a fallback if the programs are absent.
+ @xref{Standard Targets} for an example of this.
  
  It is a good idea to avoid creating symbolic links in makefiles, since a
  few file systems don't support them.
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*** 1131,1142 ****
  which of the dependencies actually run.
  
  Pre-installation and post-installation commands should not run any
! programs except for these:
  
  @example
  [ basename bash cat chgrp chmod chown cmp cp dd diff echo
! egrep expand expr false fgrep find getopt grep gunzip gzip
! hostname install install-info kill ldconfig ln ls md5sum
  mkdir mkfifo mknod mv printenv pwd rm rmdir sed sort tee
  test touch true uname xargs yes
  @end example
--- 1134,1145 ----
  which of the dependencies actually run.
  
  Pre-installation and post-installation commands should not run any
! programs directly except for these:
  
  @example
  [ basename bash cat chgrp chmod chown cmp cp dd diff echo
! expand expr false find getopt grep gunzip gzip
! hostname install kill ldconfig ln ls md5sum
  mkdir mkfifo mknod mv printenv pwd rm rmdir sed sort tee
  test touch true uname xargs yes
  @end example