neovim/scripts/vim-patch.sh

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#!/usr/bin/env bash
set -e
set -u
# Use privileged mode, which e.g. skips using CDPATH.
set -p
readonly NVIM_SOURCE_DIR="${NVIM_SOURCE_DIR:-$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)}"
readonly VIM_SOURCE_DIR_DEFAULT="${NVIM_SOURCE_DIR}/.vim-src"
readonly VIM_SOURCE_DIR="${VIM_SOURCE_DIR:-${VIM_SOURCE_DIR_DEFAULT}}"
readonly BASENAME="$(basename "${0}")"
readonly BRANCH_PREFIX="vim-"
CREATED_FILES=()
usage() {
echo "Port Vim patches to Neovim"
echo "https://github.com/neovim/neovim/wiki/Merging-patches-from-upstream-vim"
echo
echo "Usage: ${BASENAME} [-h | -l | -p vim-revision | -r pr-number]"
echo
echo "Options:"
echo " -h Show this message and exit."
echo " -l List missing Vim patches."
echo " -L List missing Vim patches (for scripts)."
echo " -M List all merged patch-numbers (at current v:version)."
echo " -p {vim-revision} Download and generate a Vim patch. vim-revision"
echo " can be a Vim version (8.0.xxx) or a Git hash."
echo " -P {vim-revision} Download, generate and apply a Vim patch."
echo " -g {vim-revision} Download a Vim patch."
echo " -s Create a vim-patch pull request."
echo " -r {pr-number} Review a vim-patch pull request."
echo ' -V Clone the Vim source code to $VIM_SOURCE_DIR.'
echo
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echo ' $VIM_SOURCE_DIR controls where Vim sources are found'
echo " (default: '${VIM_SOURCE_DIR_DEFAULT}')"
}
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msg_ok() {
printf '\e[32m✔\e[0m %s\n' "$@"
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}
msg_err() {
printf '\e[31m✘\e[0m %s\n' "$@"
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}
# Checks if a program is in the user's PATH, and is executable.
check_executable() {
test -x "$(command -v "${1}")"
}
require_executable() {
if ! check_executable "${1}"; then
>&2 echo "${BASENAME}: '${1}' not found in PATH or not executable."
exit 1
fi
}
clean_files() {
if [[ ${#CREATED_FILES[@]} -eq 0 ]]; then
return
fi
echo
echo "Created files:"
local file
for file in "${CREATED_FILES[@]}"; do
echo "${file}"
done
read -p "Delete these files (Y/n)? " -n 1 -r reply
echo
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if [[ "${reply}" == n ]]; then
echo "You can use 'git clean' to remove these files when you're done."
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else
rm -- "${CREATED_FILES[@]}"
fi
}
get_vim_sources() {
require_executable git
if [[ ! -d ${VIM_SOURCE_DIR} ]]; then
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echo "Cloning Vim into: ${VIM_SOURCE_DIR}"
git clone https://github.com/vim/vim.git "${VIM_SOURCE_DIR}"
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cd "${VIM_SOURCE_DIR}"
else
cd "${VIM_SOURCE_DIR}"
if [[ "$(git rev-parse --show-toplevel)" != "${VIM_SOURCE_DIR}" ]]; then
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msg_err "${VIM_SOURCE_DIR} does not appear to be a git repository."
echo " Please remove it and try again."
exit 1
fi
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echo "Updating Vim sources: ${VIM_SOURCE_DIR}"
git pull &&
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msg_ok "Updated Vim sources." ||
msg_err "Could not update Vim sources; ignoring error."
fi
}
commit_message() {
if [[ -n "$vim_tag" ]]; then
printf '%s\n%s' "${vim_message}" "${vim_commit_url}"
else
printf 'vim-patch:%s\n\n%s\n%s' "$vim_version" "$vim_message" "$vim_commit_url"
fi
}
find_git_remote() {
git remote -v \
| awk '$2 ~ /github.com[:\/]neovim\/neovim/ && $3 == "(fetch)" {print $1; exit}'
}
assign_commit_details() {
if [[ ${1} =~ [0-9]\.[0-9]\.[0-9]{3,4} ]]; then
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# Interpret parameter as version number (tag).
vim_version="${1}"
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vim_tag="v${1}"
vim_commit=$(cd "${VIM_SOURCE_DIR}" \
&& git log -1 --format="%H" "${vim_tag}")
local munge_commit_line=true
else
# Interpret parameter as commit hash.
vim_version="${1:0:12}"
vim_tag=
vim_commit=$(cd "${VIM_SOURCE_DIR}" \
&& git log -1 --format="%H" "${vim_version}")
local munge_commit_line=false
fi
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vim_commit_url="https://github.com/vim/vim/commit/${vim_commit}"
vim_message="$(cd "${VIM_SOURCE_DIR}" \
&& git log -1 --pretty='format:%B' "${vim_commit}" \
| sed -e 's/\(#[0-9]\{1,\}\)/vim\/vim\1/g')"
if [[ ${munge_commit_line} == "true" ]]; then
# Remove first line of commit message.
vim_message="$(echo "${vim_message}" | sed -e '1s/^patch /vim-patch:/')"
fi
patch_file="vim-${vim_version}.patch"
}
# Patch surgery
preprocess_patch() {
local file="$1"
local nvim="nvim -u NORC -i NONE --headless"
# Remove *.proto, Make*, gui_*, some if_*
local na_src='proto\|Make*\|gui_*\|if_lua\|if_mzsch\|if_olepp\|if_ole\|if_perl\|if_py\|if_ruby\|if_tcl\|if_xcmdsrv'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/src/\S*\<\%(testdir/\)\@<!\%('${na_src}'\)@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Remove channel.txt, netbeans.txt, os_*.txt, term.txt, todo.txt, version*.txt, tags
local na_doc='channel\.txt\|netbeans\.txt\|os_\w\+\.txt\|term\.txt\|todo\.txt\|version\d\.txt\|tags'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/runtime/doc/\<\%('${na_doc}'\)\>@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Remove "Last change ..." changes in doc files.
2>/dev/null $nvim --cmd 'set dir=/tmp' +'%s/^@@.*\n.*For Vim version.*Last change.*\n.*For Vim version.*Last change.*//' +w +q "$file"
# Remove some testdir/Make_*.mak files
local na_src_testdir='Make_amiga.mak\|Make_dos.mak\|Make_ming.mak\|Make_vms.mms'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/src/testdir/\<\%('${na_src_testdir}'\)\>@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Remove version.c #7555
local na_po='version.c'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/src/\<\%('${na_po}'\)\>@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Remove some *.po files. #5622
local na_po='sjiscorr.c\|ja.sjis.po\|ko.po\|pl.cp1250.po\|pl.po\|ru.cp1251.po\|uk.cp1251.po\|zh_CN.cp936.po\|zh_CN.po\|zh_TW.po'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/src/po/\<\%('${na_po}'\)\>@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Remove vimrc_example.vim
local na_vimrcexample='vimrc_example\.vim'
2>/dev/null $nvim --cmd 'set dir=/tmp' +'g@^diff --git a/runtime/\<\%('${na_vimrcexample}'\)\>@norm! d/\v(^diff)|%$ ' +w +q "$file"
# Rename src/ paths to src/nvim/
LC_ALL=C sed -e 's/\( [ab]\/src\)/\1\/nvim/g' \
"$file" > "$file".tmp && mv "$file".tmp "$file"
# Rename path to matchit plugin.
LC_ALL=C sed -e 's@\( [ab]/runtime\)/pack/dist/opt/matchit/\(plugin/matchit.vim\)@\1/\2@g' \
"$file" > "$file".tmp && mv "$file".tmp "$file"
}
get_vimpatch() {
get_vim_sources
assign_commit_details "${1}"
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git log -1 "${vim_commit}" -- >/dev/null 2>&1 || {
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>&2 msg_err "Couldn't find Vim revision '${vim_commit}'."
exit 3
}
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msg_ok "Found Vim revision '${vim_commit}'."
local patch_content
patch_content="$(git --no-pager show --color=never -1 --pretty=medium "${vim_commit}")"
cd "${NVIM_SOURCE_DIR}"
printf "Creating patch...\n"
echo "$patch_content" > "${NVIM_SOURCE_DIR}/${patch_file}"
printf "Pre-processing patch...\n"
preprocess_patch "${NVIM_SOURCE_DIR}/${patch_file}"
msg_ok "Saved patch to '${NVIM_SOURCE_DIR}/${patch_file}'."
}
stage_patch() {
get_vimpatch "$1"
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local try_apply="${2:-}"
local git_remote
git_remote="$(find_git_remote)"
local checked_out_branch
checked_out_branch="$(git rev-parse --abbrev-ref HEAD)"
if [[ "${checked_out_branch}" == ${BRANCH_PREFIX}* ]]; then
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msg_ok "Current branch '${checked_out_branch}' seems to be a vim-patch"
echo " branch; not creating a new branch."
else
printf '\nFetching "%s/master".\n' "${git_remote}"
output="$(git fetch "${git_remote}" master 2>&1)" &&
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msg_ok "${output}" ||
(msg_err "${output}"; false)
local nvim_branch="${BRANCH_PREFIX}${vim_version}"
echo
echo "Creating new branch '${nvim_branch}' based on '${git_remote}/master'."
cd "${NVIM_SOURCE_DIR}"
output="$(git checkout -b "${nvim_branch}" "${git_remote}/master" 2>&1)" &&
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msg_ok "${output}" ||
(msg_err "${output}"; false)
fi
printf "\nCreating empty commit with correct commit message.\n"
output="$(commit_message | git commit --allow-empty --file 2>&1 -)" &&
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msg_ok "${output}" ||
(msg_err "${output}"; false)
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if test -n "$try_apply" ; then
if ! check_executable patch; then
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printf "\n"
msg_err "'patch' command not found\n"
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else
printf "\nApplying patch...\n"
patch -p1 < "${patch_file}" || true
find . -name '*.orig' -type f -delete
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fi
printf "\nInstructions:\n Proceed to port the patch.\n"
else
printf '\nInstructions:\n Proceed to port the patch.\n Try the "patch" command (or use "%s -P ..." next time):\n patch -p1 < %s\n' "${BASENAME}" "${patch_file}"
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fi
printf '
Stage your changes ("git add ..."), then use "git commit --amend" to commit.
To port more patches (if any) related to %s,
run "%s" again.
* Do this only for _related_ patches (otherwise it increases the
size of the pull request, making it harder to review)
When you are done, try "%s -s" to create the pull request.
See the wiki for more information:
* https://github.com/neovim/neovim/wiki/Merging-patches-from-upstream-vim
' "${vim_version}" "${BASENAME}" "${BASENAME}"
}
hub_pr() {
hub pull-request -m "$1"
}
git_hub_pr() {
git hub pull new -m "$1"
}
submit_pr() {
require_executable git
local push_first
push_first=1
local submit_fn
if check_executable hub; then
submit_fn="hub_pr"
elif check_executable git-hub; then
push_first=0
submit_fn="git_hub_pr"
else
>&2 echo "${BASENAME}: 'hub' or 'git-hub' not found in PATH or not executable."
exit 1
fi
cd "${NVIM_SOURCE_DIR}"
local checked_out_branch
checked_out_branch="$(git rev-parse --abbrev-ref HEAD)"
if [[ "${checked_out_branch}" != ${BRANCH_PREFIX}* ]]; then
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msg_err "Current branch '${checked_out_branch}' doesn't seem to be a vim-patch branch."
exit 1
fi
local git_remote
git_remote="$(find_git_remote)"
local pr_body
pr_body="$(git log --grep=vim-patch --reverse --format='#### %s%n%n%b%n' "${git_remote}"/master..HEAD)"
local patches
# Extract just the "vim-patch:X.Y.ZZZZ" or "vim-patch:sha" portion of each log
patches=("$(git log --grep=vim-patch --reverse --format='%s' "${git_remote}"/master..HEAD | sed 's/: .*//')")
patches=(${patches[@]//vim-patch:}) # Remove 'vim-patch:' prefix for each item in array.
local pr_title="${patches[*]}" # Create space-separated string from array.
pr_title="${pr_title// /,}" # Replace spaces with commas.
local pr_message
pr_message="$(printf '[RFC] vim-patch:%s\n\n%s\n' "${pr_title#,}" "${pr_body}")"
if [[ $push_first -ne 0 ]]; then
echo "Pushing to 'origin/${checked_out_branch}'."
output="$(git push origin "${checked_out_branch}" 2>&1)" &&
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msg_ok "${output}" ||
(msg_err "${output}"; false)
echo
fi
echo "Creating pull request."
output="$(${submit_fn} "${pr_message}" 2>&1)" &&
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msg_ok "${output}" ||
(msg_err "${output}"; false)
echo
echo "Cleaning up files."
local patch_file
for patch_file in "${patches[@]}"; do
patch_file="vim-${patch_file}.patch"
if [[ ! -f "${NVIM_SOURCE_DIR}/${patch_file}" ]]; then
continue
fi
rm -- "${NVIM_SOURCE_DIR}/${patch_file}"
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msg_ok "Removed '${NVIM_SOURCE_DIR}/${patch_file}'."
done
}
# Gets all Vim commits since the "start" commit.
list_vim_commits() { (
cd "${VIM_SOURCE_DIR}" && git log --reverse --format='%H' v8.0.0000..HEAD
) }
# Prints all (sorted) "vim-patch:xxx" tokens found in the Nvim git log.
list_vimpatch_tokens() {
local tokens
# Find all "vim-patch:xxx" tokens in the Nvim git log.
tokens="$(cd "${NVIM_SOURCE_DIR}" && git log -E --grep='vim-patch:[^ ]+' | grep 'vim-patch')"
echo "$tokens" | grep -E 'vim-patch:[^ ,{]{7,}' \
| sed 's/.*\(vim-patch:[.0-9a-z]\+\).*/\1/' \
| sort \
| uniq
}
# Prints all patch-numbers (for the current v:version) for which there is
# a "vim-patch:xxx" token in the Nvim git log.
list_vimpatch_numbers() {
# Transform "vim-patch:X.Y.ZZZZ" to "ZZZZ".
list_vimpatch_tokens | while read vimpatch_token; do
echo "$vimpatch_token" | grep '8\.0\.' | sed 's/.*vim-patch:8\.0\.\([0-9a-z]\+\).*/\1/'
done
}
# Prints a newline-delimited list of Vim commits, for use by scripts.
list_missing_vimpatches() {
local tokens vim_commit vim_commits is_missing vim_tag patch_number
# Find all "vim-patch:xxx" tokens in the Nvim git log.
tokens="$(list_vimpatch_tokens)"
# Get missing Vim commits
vim_commits="$(list_vim_commits)"
for vim_commit in ${vim_commits}; do
# Check for vim-patch:<commit_hash> (usually runtime updates).
is_missing="$(echo "$tokens" | >/dev/null 2>&1 grep "vim\-patch:${vim_commit:0:7}" && echo false || echo true)"
if ! [ "$is_missing" = "false" ] \
&& vim_tag="$(cd "${VIM_SOURCE_DIR}" && git describe --tags --exact-match "${vim_commit}" 2>/dev/null)"
then
# Vim version number (not commit hash).
# Check for vim-patch:<tag> (not commit hash).
patch_number="${vim_tag:1}" # "v7.4.0001" => "7.4.0001"
is_missing="$(echo "$tokens" | >/dev/null 2>&1 grep "vim\-patch:${patch_number}" && echo false || echo true)"
vim_commit="${vim_tag#v}"
fi
if ! [ "$is_missing" = "false" ]; then
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echo "${vim_commit}"
fi
done
}
# Prints a human-formatted list of Vim commits, with instructional messages.
show_vimpatches() {
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get_vim_sources
printf "\nVim patches missing from Neovim:\n"
list_missing_vimpatches | while read vim_commit; do
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if (cd "${VIM_SOURCE_DIR}" && git --no-pager show --color=never --name-only "v${vim_commit}" 2>/dev/null) | grep -q ^runtime; then
printf ' • %s (+runtime)\n' "${vim_commit}"
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else
printf ' • %s\n' "${vim_commit}"
fi
done
printf "Instructions:
To port one of the above patches to Neovim, execute
this script with the patch revision as argument and
follow the instructions.
Examples: '%s -p 7.4.487'
'%s -p 1e8ebf870720e7b671f98f22d653009826304c4f'
NOTE: Please port the _oldest_ patch if you possibly can.
Out-of-order patches increase the possibility of bugs.
" "${BASENAME}" "${BASENAME}"
}
review_commit() {
local nvim_commit_url="${1}"
local nvim_patch_url="${nvim_commit_url}.patch"
local git_patch_prefix='Subject: \[PATCH\] '
local nvim_patch
nvim_patch="$(curl -Ssf "${nvim_patch_url}")"
local vim_version
vim_version="$(head -n 4 <<< "${nvim_patch}" | sed -n 's/'"${git_patch_prefix}"'vim-patch:\([a-z0-9.]*\)\(:.*\)\{0,1\}$/\1/p')"
echo
if [[ -n "${vim_version}" ]]; then
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msg_ok "Detected Vim patch '${vim_version}'."
else
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msg_err "Could not detect the Vim patch number."
echo " This script assumes that the PR contains only commits"
echo " with 'vim-patch:XXX' in their title."
echo
printf -- '%s\n\n' "$(head -n 4 <<< "${nvim_patch}")"
local reply
read -p "Continue reviewing (y/N)? " -n 1 -r reply
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if [[ "${reply}" == y ]]; then
echo
return
fi
exit 1
fi
assign_commit_details "${vim_version}"
echo
echo "Creating files."
echo "${nvim_patch}" > "${NVIM_SOURCE_DIR}/n${patch_file}"
msg_ok "Saved pull request diff to '${NVIM_SOURCE_DIR}/n${patch_file}'."
CREATED_FILES+=("${NVIM_SOURCE_DIR}/n${patch_file}")
local nvim="nvim -u NORC -n -i NONE --headless"
2>/dev/null $nvim --cmd 'set dir=/tmp' +'1,/^$/g/^ /-1join' +w +q "${NVIM_SOURCE_DIR}/n${patch_file}"
local expected_commit_message
expected_commit_message="$(commit_message)"
local message_length
message_length="$(wc -l <<< "${expected_commit_message}")"
local commit_message
commit_message="$(tail -n +4 "${NVIM_SOURCE_DIR}/n${patch_file}" | head -n "${message_length}")"
if [[ "${commit_message#${git_patch_prefix}}" == "${expected_commit_message}" ]]; then
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msg_ok "Found expected commit message."
else
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msg_err "Wrong commit message."
echo " Expected:"
echo "${expected_commit_message}"
echo " Actual:"
echo "${commit_message#${git_patch_prefix}}"
fi
get_vimpatch "${vim_version}"
CREATED_FILES+=("${NVIM_SOURCE_DIR}/${patch_file}")
echo
echo "Launching nvim."
nvim -c "cd ${NVIM_SOURCE_DIR}" \
-O "${NVIM_SOURCE_DIR}/${patch_file}" "${NVIM_SOURCE_DIR}/n${patch_file}"
}
review_pr() {
require_executable curl
require_executable nvim
require_executable jq
get_vim_sources
local pr="${1}"
echo
echo "Downloading data for pull request #${pr}."
local pr_commit_urls=($(curl -Ssf "https://api.github.com/repos/neovim/neovim/pulls/${pr}/commits" \
| jq -r '.[].html_url'))
echo "Found ${#pr_commit_urls[@]} commit(s)."
local pr_commit_url
local reply
for pr_commit_url in "${pr_commit_urls[@]}"; do
review_commit "${pr_commit_url}"
if [[ "${pr_commit_url}" != "${pr_commit_urls[-1]}" ]]; then
read -p "Continue with next commit (Y/n)? " -n 1 -r reply
echo
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if [[ "${reply}" == n ]]; then
break
fi
fi
done
clean_files
}
while getopts "hlLMVp:P:g:r:s" opt; do
case ${opt} in
h)
usage
exit 0
;;
l)
show_vimpatches
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exit 0
;;
L)
list_missing_vimpatches
exit 0
;;
M)
list_vimpatch_numbers
exit 0
;;
p)
stage_patch "${OPTARG}"
exit 0
;;
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P)
stage_patch "${OPTARG}" TRY_APPLY
exit 0
;;
g)
get_vimpatch "${OPTARG}"
exit 0
;;
r)
review_pr "${OPTARG}"
exit 0
;;
s)
submit_pr
exit 0
;;
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V)
get_vim_sources
exit 0
;;
*)
exit 1
;;
esac
done
usage
# vim: et sw=2