4211

Just ran into first issue from using the portable /bin/sh rather than a
modern shell:
  https://stackoverflow.com/questions/15744421/read-command-doesnt-wait-for-input

Turn on errexit everywhere.

build_and_test_until

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 ./clean top-level
 ./build --until $1  &&  ./mu_bin test

clean

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 set -v
 rm -rf mu.cc core.mu mu_bin* *_list .build

git_log_filtered

@@ -4,5 +4,6 @@
 # I usually run this through an alias local to this repo:
 #   $ git config alias.ll '!./git_log_filtered'
 #   $ git ll --stat
+set -e
 
 git log $* -- . ":(exclude)html"

linkify/build

@@ -1,3 +1,4 @@
 #!/bin/sh
+set -e
 
 c++ -g linkify.cc -o linkify

linkify/clean

@@ -1,2 +1,4 @@
 #!/bin/sh
+set -e
+
 rm -rf linkify *.dSYM

mu

@@ -1,5 +1,6 @@
 #!/bin/sh
 # Run interpreter, first compiling if necessary.
+set -e
 
 ./build  &&  ./mu_bin "$@"
 

snapshot_lesson

@@ -1,6 +1,7 @@
 #!/bin/sh
 # Hacky little helper called from edit/ and sandbox/ apps to save a snapshot
 # of lesson/ using git.
+set -e
 
 test -d lesson/.git || exit 0  # give up if it's not a git repo
 

subx/build_and_test_until

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 ./clean top-level  # ignore subsidiary tools like tangle and cleave
 ./build --until $1  &&  ./subx_bin test

subx/clean

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 
 set -v
 rm -rf subx.cc subx_bin* *_list

subx/subx

@@ -1,4 +1,5 @@
 #!/bin/sh
 # Run SubX VM, first compiling if necessary.
+set -e
 
 ./build  &&  ./subx_bin "$@"

test_layers

@@ -13,6 +13,7 @@
 #     test_layers x y
 #   Test all layers for a specific app:
 #     test_layers app
+set -e
 
 if [[ $1 == one-off ]]
 then