--- sh.subst 2004/02/17 08:54:14 1.12
+++ sh.subst 2004/05/08 19:09:58 1.13
@@ -19,14 +19,15 @@
##
str_tool="subst"
-str_usage="[-v|--verbose] [-t|--trace] [-n|--nop] [-s|--stealth] [-i|--interactive] [-b|--backup <ext>] [-e|--exec <cmd>] [-f|--file <cmd-file>] [<file>] [...]"
+str_usage="[-v|--verbose] [-t|--trace] [-n|--nop] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup <ext>] [-e|--exec <cmd>] [-f|--file <cmd-file>] [<file>] [...]"
gen_tmpfile=yes
arg_spec="0+"
-opt_spec="v.t.n.s.i.b:e+f:"
-opt_alias="v:verbose,t:trace,n:nop,s:stealth,i:interactive,b:backup,e:exec,f:file"
+opt_spec="v.t.n.q.s.i.b:e+f:"
+opt_alias="v:verbose,t:trace,n:nop,q:quiet,s:stealth,i:interactive,b:backup,e:exec,f:file"
opt_v=no
opt_t=no
opt_n=no
+opt_q=no
opt_s=no
opt_i=no
opt_b=""
@@ -142,6 +143,13 @@
fi
fi
+ # optionally check whether any content change actually occurred
+ if [ ".$opt_q" = .no ]; then
+ if cmp $file$orig $file >/dev/null 2>&1; then
+ echo "$msgprefix:Warning: substitution operation results in no content change" 1>&2
+ fi
+ fi
+
# optionally remove preserved original file
if [ ".$opt_b" = . ]; then
if [ ".$opt_t" = .yes ]; then
@@ -183,6 +191,7 @@
[B<-v>|B<--verbose>]
[B<-t>|B<--trace>]
[B<-n>|B<--nop>]
+[B<-q>|B<--quiet>]
[B<-s>|B<--stealth>]
[B<-i>|B<--interactive>]
[B<-b>|B<--backup> I<ext>]
@@ -214,6 +223,10 @@
No operation mode. Actual execution of the essential shell commands
which would be executed is suppressed.
+=item B<-q>, B<--quiet>
+
+Suppress warning on substitution operation resulting in no content change.
+
=item B<-s>, B<--stealth>
Stealth operation. Preserve timestamp on I<file>.
|
