Avoid a space before a tab in a comment

This change avoids a false positive when looking for bad indentations.

Moreover:
Replace the deprecated 'egrep' variant by 'grep -E'.

(cherry picked from commit 17fb9526b1feff7875e3ec00427dfcb8096e8621)

[skip ci]

1 files changed, 1 insertions, 1 deletions

diff --git a/mkdep b/mkdep
index 6496b831..caf547e2 100755
--- a/mkdep
+++ b/mkdep
@@ -87,7 +87,7 @@ _EOF_
 # hack can't deal with anything that requires a search path, and doesn't
 # even try for anything using bracket (<>) syntax.
 #
-# egrep '^#include[ 	]*".*"' /dev/null $* |
+# grep -E '^#include[[:blank:]]*".*"' /dev/null $* |
 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
 
 #