X-Git-Url: https://git.gir.st/forkaftergrep.git/blobdiff_plain/4f83e12dd2c7b8a87a67159ce9861b4e6d3ee23d..9505a99fd48d04dfd61cac0d77078395b91365e7:/README.md

diff --git a/README.md b/README.md
index afb351a..9791ba5 100644
--- a/README.md
+++ b/README.md
@@ -10,11 +10,9 @@ SYNOPSIS
        fag [OPTIONS] PATTERN PROGRAM [ARGUMENTS...]
 
 DESCRIPTION
-       fag  searches  the PROGRAM for the string PATTERN.  This is useful if a
-       program takes a while to initialize and prints a message to  stdout  or
-       stderr  when ready. When placed in a script, fag blocks execution until
-       the pattern was found, then daemonizes the child process,  returns  the
-       PID on stdout and exits.
+       fag  uses  grep  to  search  the  output  of  PROGRAM  for  the regular
+       expression PATTERN and daemonizes it when a match is found. The PID  is
+       then returned on stdout.
 
 OPTIONS
    Behaviour Changing Options
@@ -27,6 +25,9 @@ OPTIONS
 
        -e     Search PATTERN on stderr instead of stdout.
 
+       -V     Be verbose; print program's stdout (or stderr if -e is  set)  to
+              stderr.
+
    Generic Program Information
        -h     Output a short usage message and exit.
 
@@ -34,20 +35,15 @@ OPTIONS
 
 EXIT STATUS
        If PATTERN was found, 0 is returned. Otherwise, the exit status follows
-       the  BSD  guideline  outlined  in  #include  <sysexits.h>  if the error
-       occured from within fag or in case the chid process exits  prematurely,
+       the BSD guideline  outlined  in  #include  <sysexits.h>  if  the  error
+       occured  from within fag or in case the chid process exits prematurely,
        its exit code is inherited. Notably, 69 is returned when the timeout is
        reached.
 
 BUGS
    Known Bugs
-       Only a simple string search is performed on PATTERN in this version.
-
-       If a PROGRAM like cat opens stdout/stderr, but never writes to it,  the
-       timeout isn't triggered.
-
-       SIGNAL needs to be given as an integer; mnemonic should be supported in
-       the future.
+       if  grep  exits  with a code > 0, fag should terminate with grep's exit
+       code and an error message. instead, fag exits as if a match was found.
 
        Sometimes, stdin behaves strange after the program terminates.
 
@@ -56,15 +52,19 @@ BUGS
        https://github.com/girst/forkaftergrep/.
 
 NOTES
-       Some might find the name of this program offensive. Feel free to create
-       a symlink or alias on your system.
+       SIGNAL needs to be given as an integer. implementing mnemonics is dirty
+       and not very portable; maybe support in the future.
 
 COPYRIGHT
-       Copyright   2017   Tobias   Girstmair.   This  is  free  software;  see
+       Copyright  2017  Tobias  Girstmair.  This   is   free   software;   see
        https://www.gnu.org/licenses/gpl-3.0.html for conditions.
 
 AUTHOR
        Tobias Girstmair (http://isticktoit.net)
 
-1.0                            07 February 2017                         fag(1)
+1.0                             12 August 2017                          fag(1)
 ```
+
+## Notes
+
+I've written this program for the [`tzap`/`szap`](https://linuxtv.org/wiki/index.php/Zap) utilities. They take a few seconds until the TV card/stick is tuned, and won't fork off when they are ready (If you terminate them, the tuning will end). Instead of waiting a few seconds, and hoping for the best, this does the exactly right thing.