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67 lines
2.9 KiB
Plaintext
67 lines
2.9 KiB
Plaintext
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define-command patch -params .. -docstring %{
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patch [<arguments>]: apply selections in diff to a file
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Given some selections within a unified diff, apply the changed lines in
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each selection by piping them to "patch <arguments> 1>&2"
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(or "<arguments> 1>&2" if <arguments> starts with a non-option argument).
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If successful, the in-buffer diff will be updated to reflect the applied
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changes.
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For selections that contain no newline, the entire enclosing diff hunk
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is applied (unless the cursor is inside a diff header, in which case
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the entire diff is applied).
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To revert changes, <arguments> must contain "--reverse" or "-R".
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} %exp{
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evaluate-commands -draft -itersel -save-regs aefs|^ %%{
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set-register f %val{source}
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%{
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try %{
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execute-keys <a-k>\n<ret>
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} catch %{
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# The selection contains no newline.
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execute-keys -save-regs '' Z
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execute-keys <a-l><semicolon><a-?>^diff<ret>
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try %{
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execute-keys <a-k>^@@<ret>
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# If the cursor is in a diff hunk, stage the entire hunk.
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execute-keys z
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execute-keys /.*?(?:(?=\n@@)|(?=\ndiff)|(?=\n\n)|\z)<ret>x<semicolon><a-?>^@@<ret>
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} catch %{
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# If the cursor is in a diff header, stage the entire diff.
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execute-keys <a-semicolon>?.*?(?:(?=\ndiff)|(?=\n\n)|\z)<ret>
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}
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}
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# We want to apply only the selected lines. Remember them.
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execute-keys <a-:>
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set-register s %val{selection_desc}
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# Select forward until the end of the last hunk.
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execute-keys H?.*?(?:(?=\n@@)|(?=\ndiff)|(?=\n\n)|\z)<ret>x
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# Select backward to the beginning of the first hunk's diff header.
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execute-keys <a-semicolon><a-L><a-?>^diff<ret>
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# Move cursor to the beginning so we know the diff's offset within the buffer.
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execute-keys <a-:><a-semicolon>
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set-register a %arg{@}
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set-register e nop
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set-register | %{
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# The selected range to apply.
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IFS=' .,' read min_line _ max_line _ <<-EOF
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$kak_reg_s
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EOF
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min_line=$((min_line - kak_cursor_line + 1))
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max_line=$((max_line - kak_cursor_line + 1))
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# Since registers are never empty, we get an empty arg even if
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# there were no args. This does no harm because we pass it to
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# a shell where it expands to nothing.
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eval set -- $kak_quoted_reg_a
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"${kak_reg_f%/*}/patch-range.pl" $min_line $max_line "$@" ||
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echo >$kak_command_fifo "set-register e fail 'patch: failed to apply selections, see *debug* buffer'"
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}
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execute-keys |<ret>
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%reg{e}
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}
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}
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}
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provide-module patch %§§
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