refactor: clean up old IFS workarounds

Author: akinomyoga

bash_completion

@@ -2578,7 +2578,6 @@ _comp_command_offset()
     _comp_get_words cur
 
     if ((COMP_CWORD == 0)); then
-        local IFS=$'\n'
         compopt -o filenames
         _comp_compgen -- -d -c
     else

completions/bzip2

@@ -26,7 +26,7 @@ _comp_cmd_bzip2()
         return
     fi
 
-    local IFS=$'\n' xspec="*.?(t)bz2"
+    local xspec="*.?(t)bz2"
 
     if [[ $prev == --* ]]; then
         [[ $prev == --@(decompress|list|test) ]] && xspec="!"$xspec

completions/cd

@@ -13,7 +13,7 @@ _comp_cmd_cd()
         return
     fi
 
-    local IFS=$'\n' i j k
+    local i j k
 
     compopt -o filenames
 

completions/gzip

@@ -27,7 +27,7 @@ _comp_cmd_gzip()
         return
     fi
 
-    local IFS=$'\n' xspec="*.@(gz|t[ag]z)"
+    local xspec="*.@(gz|t[ag]z)"
     [[ ${1##*/} == pigz ]] && xspec="*.@([gz]z|t[ag]z)"
 
     if [[ $prev == --* ]]; then

completions/lzma

@@ -15,7 +15,7 @@ _comp_cmd_lzma()
         return
     fi
 
-    local IFS=$'\n' xspec="*.@(lzma|tlz)"
+    local xspec="*.@(lzma|tlz)"
 
     if [[ $prev == --* ]]; then
         [[ $prev == --@(decompress|list|test) ]] && xspec="!"$xspec

completions/rpm

@@ -30,8 +30,7 @@ _comp_deprecate_func 2.12 _rpm_installed_packages \
 
 _comp_cmd_rpm__groups()
 {
-    local IFS=$'\n'
-    _comp_compgen_split -- "$("${1:-rpm}" -qa --nodigest --nosignature \
+    _comp_compgen_split -l -- "$("${1:-rpm}" -qa --nodigest --nosignature \
         --queryformat='%{GROUP}\n' 2>/dev/null)"
 }
 
@@ -109,7 +108,7 @@ _comp_cmd_rpm()
                 _comp_compgen_filedir
             else
                 # complete on capabilities
-                local IFS=$'\n' fmt
+                local fmt
                 case $prev in
                     *enhances) fmt="%{ENHANCENAME}" ;;
                     *provides) fmt="%{PROVIDENAME}" ;;
@@ -118,8 +117,8 @@ _comp_cmd_rpm()
                     *suggests) fmt="%{SUGGESTNAME}" ;;
                     *supplements) fmt="%{SUPPLEMENTNAME}" ;;
                 esac
-                _comp_compgen_split -- "$("$1" -qa --nodigest --nosignature \
-                    --queryformat="\"$fmt\\n\"" 2>/dev/null |
+                _comp_compgen_split -l -- "$("$1" -qa --nodigest \
+                    --nosignature --queryformat="\"$fmt\\n\"" 2>/dev/null |
                     command grep -vF '(none)')"
             fi
             return