Tweak libdemo

Dependencies

• [2] VEWJUZLA Fix linter
• [3] JGZ7GBCL Add linting
• [4] M5U5PAX7 Add wrapper script, improve libdemo
• [5] 7AUC4NKI Initial commit
• [6] VMUKZQZR Work on 02-nix-build
• [7] VXZ5QMIE Fix CI

Change contents

• replacement in bash/libdemo.sh at line 6
  [3.129]→[3.129:139](∅→∅)
  − prev=
  [3.129]

  [3.139]
  + __libdemo_prev_output=
• edit in bash/libdemo.sh at line 39
  [3.900]

  [3.900]
  + is_interactive() {

  + if [ "${LIBDEMO_INTERACTIVE:-1}" = 1 ]; then

  + return 0

  + else

  + return 1

  + fi

  + }

  +
• replacement in bash/libdemo.sh at line 48
  [3.918]→[3.918:971](∅→∅)
  − if [ "${LIBDEMO_INTERACTIVE:-1}" = 1 ]; then
  [3.918]

  [2.5]
  + if is_interactive; then
• replacement in bash/libdemo.sh at line 78
  [3.1538]→[3.1538:1562](∅→∅)
  − prev=demoheader
  [3.1538]

  [3.1562]
  + __libdemo_prev_output=demoheader
• replacement in bash/libdemo.sh at line 86
  [3.1627]→[3.1627:1670](∅→∅)
  − if [ "${prev}" != demoecho ]; then
  [3.1627]

  [3.1670]
  + if [ "${__libdemo_prev_output}" != demoecho ]; then
• replacement in bash/libdemo.sh at line 92
  [3.1773]→[3.1773:1795](∅→∅)
  − prev=demoecho
  [3.1773]

  [3.1795]
  + __libdemo_prev_output=demoecho
• edit in bash/libdemo.sh at line 159
  [3.3420]→[3.3420:3450](∅→∅)
  − # echo -e "${prefix}"
• replacement in bash/libdemo.sh at line 160
  [3.3468]→[3.3468:3489](∅→∅)
  − prev=democmd
  [3.3468]

  [3.3489]
  + __libdemo_prev_output=democmd
• replacement in bash/libdemo.sh at line 164
  [3.2151]→[3.2151:2204](∅→∅)
  − if [ "${LIBDEMO_INTERACTIVE:-1}" = 1 ]; then
  [3.2151]

  [3.2204]
  + if is_interactive; then
• replacement in bash/libdemo.sh at line 180
  [3.416]→[3.2250:2303](∅→∅)
  − if [ "${LIBDEMO_INTERACTIVE:-1}" = 1 ]; then
  [3.416]

  [3.2303]
  + if is_interactive; then
• edit in bash/libdemo.sh at line 183
  [3.2332]

  [3.430]
  + __libdemo_prev_output=democlear