Use read builtin safely

src/include/build.sh

         do
             debug_var section
             ini lskeys "$section" \
-              | while read varname;
+              | while read -r varname;
                 do
                     varvalue="$(ini 1value "$section:$varname" | _qfs )"
                     echo "s|$varname|$varvalue|g;"
     #
     local srcpath
     find -type f -name '*.skel' \
-     | while read srcpath;
+     | while read -r srcpath;
        do
            _build1 "$srcpath"
        done
     if command -v ronn >/dev/null;
     then
         ini lskeys "files:man" \
-          | while read manfile;
+          | while read -r manfile;
             do
                 mdfile="$manfile.md"
                 ronn -r "$mdfile"
     mkdir -p debian/source
     local dfsrc dftgt
     find "$debian_skel" -type f \
-      | while read dfsrc;
+      | while read -r dfsrc;
         do
             dftgt="debian/${dfsrc#$debian_skel}"
             mkdir -p "$(dirname "$dftgt")"

src/include/deploy.sh

         _maybe mkdir -vp "$(dirname "$dst")"
         _maybe cp -Tvr "$src" "$dst"
         find "$dst" -type f \
-          | while read chmod_item;
+          | while read -r chmod_item;
             do
                 _maybe chmod "$mode" "$chmod_item"
             done
     ini lskeys "files" \
       | sort \
       | uniq \
-      | while read group;
+      | while read -r group;
         do
             mode=$(ini 1value "modes:$group")
             ini values "files:$group" \
-              | while read src dst;
+              | while read -r src dst;
                 do
                     dst=$(_get_dst "$group" "$src" "$dst")
                     _deploy_item "$src" "$dst" "$mode"
     ini lskeys "files" \
       | sort \
       | uniq \
-      | while read group;
+      | while read -r group;
         do
             ini values "files:$group" \
-              | while read src dst;
+              | while read -r src dst;
                 do
                     dst=$(_get_dst "$group" "$src" "$dst")
                     _maybe rm -vrf "$dst"

src/include/ini.sh

     #
     # A no-op for text stream
     #
-    while read line;
+    while read -r line;
     do
         printf -- "%s\n" "$line"
     done
     # Expand reference value (prefix only)
     #
     local line suffix ref value
-    while read line;                        # [foo:bar]/path
+    while read -r line;                     # [foo:bar]/path
     do
         suffix="${line#\[*\]}"              # /path
         ref="${line%$suffix}"               # [foo:bar]
     local ok=false
     grep '.' \
       | grep -v '\s*#' \
-      | while read line;
+      | while read -r line;
         do
             case "$line" in
                 \[$wnt\]) ok=true;  continue ;;