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#!/bin/bash
gitgrep()
{
local out=$(git grep -I -E -n "$1" | \
grep -E '^(bash_completion|contrib/|test/)' | \
grep -Fv 'test/runLint')
if [ -n "$out" ] ; then
printf '***** %s\n' "$2"
printf '%s\n\n' "$out"
fi
}
gitgrep "\bawk\b.*-F([[:space:]]|[[:space:]]*[\"'][^\"']{2,})" \
'awk with -F char or -F ERE, use -Fchar instead (Solaris)'
gitgrep '\bsed\b.*\\[?+]' \
'sed with ? or +, use POSIX BRE instead (\{m,n\})'
gitgrep '\bsed\b.*\\\|' \
"sed with \|, use POSIX BRE (possibly multiple sed invocations) or another tool instead"
# TODO: really nonportable? appears to work fine in Linux, FreeBSD, Solaris
#gitgrep '\bsed\b.*;' \
# 'sed with ;, use multiple -e options instead (POSIX?) (false positives?)'
gitgrep '\bsed\b.*-[^[:space:]]*[rE]' \
'sed with -r or -E, drop and use POSIX BRE instead'
gitgrep '\b[ef]grep\b' \
'[ef]grep, use grep -[EF] instead (historical/deprecated)'
# TODO: $ in sed subexpression used as an anchor (POSIX BRE optional, not in
# Solaris/FreeBSD)
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