.travis.yml: favor >- over |- and backslash

.travis.yml

@@ -72,23 +72,23 @@ env:
       - bash -cx "${BEFORE_INSTALL}"
       - tool/travis_retry.sh sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - |-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install \
-          ccache \
-          gcc-8 \
-          g++-8 \
-          libffi-dev \
-          libgdbm-dev \
-          libgmp-dev \
-          libjemalloc-dev \
-          libncurses5-dev \
-          libncursesw5-dev \
-          libreadline6-dev \
-          libssl-dev \
-          libyaml-dev \
-          openssl \
-          valgrind \
-          zlib1g-dev
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        ccache
+        gcc-8
+        g++-8
+        libffi-dev
+        libgdbm-dev
+        libgmp-dev
+        libjemalloc-dev
+        libncurses5-dev
+        libncursesw5-dev
+        libreadline6-dev
+        libssl-dev
+        libyaml-dev
+        openssl
+        valgrind
+        zlib1g-dev
 
   - &clang-8
     compiler: clang-8
@@ -101,22 +101,22 @@ env:
           retries: true
     before_install:
       - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - |-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install \
-          clang-8 \
-          llvm-8-tools \
-          libffi-dev \
-          libgdbm-dev \
-          libgmp-dev \
-          libjemalloc-dev \
-          libncurses5-dev \
-          libncursesw5-dev \
-          libreadline6-dev \
-          libssl-dev \
-          libyaml-dev \
-          openssl \
-          valgrind \
-          zlib1g-dev
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        clang-8
+        llvm-8-tools
+        libffi-dev
+        libgdbm-dev
+        libgmp-dev
+        libjemalloc-dev
+        libncurses5-dev
+        libncursesw5-dev
+        libreadline6-dev
+        libssl-dev
+        libyaml-dev
+        openssl
+        valgrind
+        zlib1g-dev
 
   # --------
 
@@ -276,26 +276,26 @@ env:
     before_install:
       - tool/travis_retry.sh sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - |-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install \
-          gcc-8-multilib \
-          g++-8 \
-          g++-8-multilib \
-          libstdc++-8-dev:i386 \
-          libffi-dev:i386 \
-          libffi6:i386 \
-          libgdbm-dev:i386 \
-          libgdbm3:i386 \
-          libncurses5-dev:i386 \
-          libncurses5:i386 \
-          libncursesw5-dev:i386 \
-          libreadline6-dev:i386 \
-          libreadline6:i386 \
-          libssl-dev:i386 \
-          libssl1.0.0:i386 \
-          linux-libc-dev:i386 \
-          zlib1g-dev:i386 \
-          zlib1g:i386
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        gcc-8-multilib
+        g++-8
+        g++-8-multilib
+        libstdc++-8-dev:i386
+        libffi-dev:i386
+        libffi6:i386
+        libgdbm-dev:i386
+        libgdbm3:i386
+        libncurses5-dev:i386
+        libncurses5:i386
+        libncursesw5-dev:i386
+        libreadline6-dev:i386
+        libreadline6:i386
+        libssl-dev:i386
+        libssl1.0.0:i386
+        linux-libc-dev:i386
+        zlib1g-dev:i386
+        zlib1g:i386
 
   - &arm32-linux
     name: arm32-linux
@@ -308,26 +308,26 @@ env:
     before_install:
       - sudo dpkg --add-architecture armhf
       - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - |-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install \
-          ccache \
-          crossbuild-essential-armhf \
-          libc6:armhf \
-          libstdc++-5-dev:armhf \
-          libffi-dev:armhf \
-          libffi6:armhf \
-          libgdbm-dev:armhf \
-          libgdbm3:armhf \
-          libncurses5-dev:armhf \
-          libncurses5:armhf \
-          libncursesw5-dev:armhf \
-          libreadline6-dev:armhf \
-          libreadline6:armhf \
-          libssl-dev:armhf \
-          libssl1.0.0:armhf \
-          linux-libc-dev:armhf \
-          zlib1g-dev:armhf \
-          zlib1g:armhf
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        ccache
+        crossbuild-essential-armhf
+        libc6:armhf
+        libstdc++-5-dev:armhf
+        libffi-dev:armhf
+        libffi6:armhf
+        libgdbm-dev:armhf
+        libgdbm3:armhf
+        libncurses5-dev:armhf
+        libncurses5:armhf
+        libncursesw5-dev:armhf
+        libreadline6-dev:armhf
+        libreadline6:armhf
+        libssl-dev:armhf
+        libssl1.0.0:armhf
+        linux-libc-dev:armhf
+        zlib1g-dev:armhf
+        zlib1g:armhf
 
   - &pedanticism
     name: -std=c99 -pedantic