plan9fox/rc/bin/g
Ori Bernstein 1290c534be g: show all file names when grepping
When grep gets a single file argument, it does
not show the file name. This makes seeing the
file name in the output of 'g' difficult.

Pass a spare /dev/null to each invocation of g,
in order to force it to show the file name.
2022-02-05 00:40:45 +00:00

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#!/bin/rc
rfork e
nl='
'
flags=()
recurse=()
files=()
while(! ~ $#* 1 && ~ $1 -* && ! ~ $1 --){
if(~ $1 '-n')
recurse=-n1
if not
flags=($flags $1);
shift
}
if(~ $1 --)
shift
if(~ $#* 0) {
echo 'usage: g [flags] pattern [files]' >[1=2]
exit usage
}
pattern=$1
shift
suffixes='\.([bcChlmsy]|asm|awk|cc|cgi|cpp|cs|go|goc|hs|java|lua|lx|mk|ml|mli|ms|myr|pl|py|rc|sh|tex|xy)$'
fullnames='(^|/)mkfile$'
repodirs='(^|/)(.git|.hg)($|/)'
switch($#*){
case 0
walk -f $recurse | grep -e $fullnames -e $suffixes >[2]/dev/null
case *
for(f in $*){
if(test -d $f)
walk -f $recurse -- $f \
| grep -e $fullnames -e $suffixes >[2]/dev/null
if not
echo $f
}
} | grep -v $repodirs | xargs grep -n $flags -- $pattern /dev/null