cosmo: merge upstream dash into unbourne shell and distribute it

build-all

@@ -35,8 +35,8 @@ dbg_retrieve() { : \
  && podman build -t cosmo-yices     cosmo-yices \
 \
  && bin=/cosmopolitan/bin \
- && yes_retrieve cosmo $bin/ape $bin/awk.com $bin/gzip.com \
-    $bin/make.com $bin/sed.com $bin/unzip.com $bin/zip.com \
+ && yes_retrieve cosmo $bin/ape $bin/awk.com $bin/gzip.com $bin/make.com \
+    $bin/sed.com $bin/unbourne.com $bin/unzip.com $bin/zip.com \
  && dbg_retrieve cosmo-kuroko /bin/kuroko.com \
  && dbg_retrieve cosmo-muon /bin/muon.com \
  && dbg_retrieve cosmo-perl /bin/perl.com \

cosmo/Dockerfile

@@ -20,7 +20,8 @@ WORKDIR /cosmopolitan
 # tell makefiles to be less noisy, also use /tmp:
 ENV V=0 COLUMNS=80 TMPDIR=/tmp
 
-COPY --chmod=0755 --from=localhost/notwa-util /nu/shed /usr/bin/
+COPY unbourne-backports.patch /cosmopolitan/
+COPY --chmod=0755 --from=localhost/notwa-util /nu/ /usr/bin/
 RUN : \
 # allow optimized builds to be more portable, so the container is too. \
  && shed build/config.mk 's/-march=native/-march=haswell -mno-pclmul -mtune=generic/' \
@@ -46,14 +47,15 @@ RUN : \
     commit "$COSMO_COMMIT" \
     flavor "$COSMO_FLAVOR" \
     mode "$mode" \
+# apply patches from dash to unbourne shell \
+ && /usr/bin/busybox patch -p1 -i unbourne-backports.patch \
 # make calling make a little shorter (don't put this in distrib!) \
  && ln -s build/bootstrap/make.com make \
 ;
 
 # finally start building
-
 RUN --mount=type=tmpfs,target=/tmp : \
- && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" \
+ && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" e="$o/examples" \
  && ./make -j2 MODE="$mode" \
   "$a/ape-copy-self.o"      "$a/ape-no-modify-self.o" "$a/ape.elf"              \
   "$a/ape.lds"              "$a/ape.macho"            "$a/ape.o"                \
@@ -70,12 +72,13 @@ RUN --mount=type=tmpfs,target=/tmp : \
   "$b/zipobj.com"           \
 # these are essential too! \
  && ./make -j2 MODE="$mode" "$@" \
-  "$t/awk/awk.com"          "$t/sed/sed.com"          "$t/unzip/unzip.com"      \
-  "$t/zip/zip.com"          "$b/assimilate.com"       \
+  "$e/unbourne.com"         "$t/awk/awk.com"          "$t/sed/sed.com"          \
+  "$t/unzip/unzip.com"      "$t/zip/zip.com"          "$b/assimilate.com"       \
 ;
 
+# install the basics (no executable binaries besides ape.elf)
 RUN : \
- && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" \
+ && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" e="$o/examples" \
  && mkdir dist "dist/$flavor" "dist/$flavor/public" \
  && echo /dist >>.gitignore \
  && cp -t "dist/$flavor" \
@@ -94,10 +97,11 @@ RUN : \
   "$t/zlib/zconf.h"         "$t/zlib/zlib.h"          \
 ;
 
+# install the rest
 FROM builder AS distrib
 COPY --chmod=0755 --from=localhost/notwa-util /nu/dedupe /usr/bin/
 RUN --mount=type=tmpfs,target=/tmp : \
- && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" \
+ && . ./env && o="o/$mode" a="$o/ape" b="$o/tool/build" t="$o/third_party" e="$o/examples" \
  && find o -name '*.sym' -delete \
  && dedupe o/third_party/gcc /distrib/gcc/ \
     bin/x86_64-linux-musl-gcc \
@@ -108,14 +112,14 @@ RUN --mount=type=tmpfs,target=/tmp : \
 # discover .com files by uncommenting this command: \
 #&& find o -name '*.com' ! -type d -exec printf '%s\n' cp -t /tmp/bin {} + | sort && exit 1 \
  && cp -t /tmp/bin \
-  "$t/awk/awk.com"          "$t/make/make.com"        "$t/sed/sed.com"          \
-  "$t/unzip/unzip.com"      "$t/zip/zip.com"          "$b/ar.com"               \
-  "$b/assimilate.com"       "$b/cocmd.com"            "$b/compile.com"          \
-  "$b/cp.com"               "$b/echo.com"             "$b/fixupobj.com"         \
-  "$b/gzip.com"             "$b/mkdeps.com"           "$b/mkdir.com"            \
-  "$b/package.com"          "$b/pwd.com"              "$b/rm.com"               \
-  "$b/rollup.com"           "$b/symtab.com"           "$b/touch.com"            \
-  "$b/unbundle.com"         "$b/zipobj.com"           \
+  "$e/unbourne.com"         "$t/awk/awk.com"          "$t/make/make.com"        \
+  "$t/sed/sed.com"          "$t/unzip/unzip.com"      "$t/zip/zip.com"          \
+  "$b/ar.com"               "$b/assimilate.com"       "$b/cocmd.com"            \
+  "$b/compile.com"          "$b/cp.com"               "$b/echo.com"             \
+  "$b/fixupobj.com"         "$b/gzip.com"             "$b/mkdeps.com"           \
+  "$b/mkdir.com"            "$b/package.com"          "$b/pwd.com"              \
+  "$b/rm.com"               "$b/rollup.com"           "$b/symtab.com"           \
+  "$b/touch.com"            "$b/unbundle.com"         "$b/zipobj.com"           \
  && dedupe /tmp/bin /distrib/bin/ \
 #&& ln -s "../dist/$flavor/ape.elf" /distrib/bin/ape \
  && cp "dist/$flavor/ape.elf" /distrib/bin/ape \