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bug#30503: 27.0.50; allow hiding M-x grep command line


From: Charles A. Roelli
Subject: bug#30503: 27.0.50; allow hiding M-x grep command line
Date: Sat, 17 Feb 2018 17:25:20 +0100

The first thing you see after M-x grep is a 1382-character line like
this:

find . -type d \( -path \*/SCCS -o -path \*/RCS -o -path \*/CVS -o -path 
\*/MCVS -o -path \*/.src -o -path \*/.svn -o -path \*/.git -o -path \*/.hg -o 
-path \*/.bzr -o -path \*/_MTN -o -path \*/_darcs -o -path \*/\{arch\} \) 
-prune -o \! -type d \( -name .\#\* -o -name \*.o -o -name \*\~ -o -name \*.bin 
-o -name \*.lbin -o -name \*.so -o -name \*.a -o -name \*.ln -o -name \*.blg -o 
-name \*.bbl -o -name \*.elc -o -name \*.lof -o -name \*.glo -o -name \*.idx -o 
-name \*.lot -o -name \*.fmt -o -name \*.tfm -o -name \*.class -o -name \*.fas 
-o -name \*.lib -o -name \*.mem -o -name \*.x86f -o -name \*.sparcf -o -name 
\*.dfsl -o -name \*.pfsl -o -name \*.d64fsl -o -name \*.p64fsl -o -name 
\*.lx64fsl -o -name \*.lx32fsl -o -name \*.dx64fsl -o -name \*.dx32fsl -o -name 
\*.fx64fsl -o -name \*.fx32fsl -o -name \*.sx64fsl -o -name \*.sx32fsl -o -name 
\*.wx64fsl -o -name \*.wx32fsl -o -name \*.fasl -o -name \*.ufsl -o -name 
\*.fsl -o -name \*.dxl -o -name \*.lo -o -name \*.la -o -name \*.gmo -o
  -name \*.mo -o -name \*.toc -o -name \*.aux -o -name \*.cp -o -name \*.fn -o 
-name \*.ky -o -name \*.pg -o -name \*.tp -o -name \*.vr -o -name \*.cps -o 
-name \*.fns -o -name \*.kys -o -name \*.pgs -o -name \*.tps -o -name \*.vrs -o 
-name \*.pyc -o -name \*.pyo \) -prune -o  -type f \( -iname \* -o -iname 
.\[\!.\]\* -o -iname ..\?\* \) -exec grep --color -nH --null -e Emacs \{\} +

Could we provide an option to hide the barrage of ignored directories
and files?  It might also be worth adding a text button or keybinding
to toggle their visibility interactively.





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