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299
env/lib/python3.11/site-packages/markdown_it/rules_block/blockquote.py
vendored
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299
env/lib/python3.11/site-packages/markdown_it/rules_block/blockquote.py
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# Block quotes
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from __future__ import annotations
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import logging
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from ..common.utils import isStrSpace
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from .state_block import StateBlock
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LOGGER = logging.getLogger(__name__)
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def blockquote(state: StateBlock, startLine: int, endLine: int, silent: bool) -> bool:
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LOGGER.debug(
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"entering blockquote: %s, %s, %s, %s", state, startLine, endLine, silent
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)
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oldLineMax = state.lineMax
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pos = state.bMarks[startLine] + state.tShift[startLine]
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max = state.eMarks[startLine]
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if state.is_code_block(startLine):
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return False
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# check the block quote marker
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try:
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if state.src[pos] != ">":
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return False
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except IndexError:
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return False
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pos += 1
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# we know that it's going to be a valid blockquote,
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# so no point trying to find the end of it in silent mode
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if silent:
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return True
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# set offset past spaces and ">"
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initial = offset = state.sCount[startLine] + 1
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try:
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second_char: str | None = state.src[pos]
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except IndexError:
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second_char = None
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# skip one optional space after '>'
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if second_char == " ":
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# ' > test '
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# ^ -- position start of line here:
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pos += 1
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initial += 1
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offset += 1
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adjustTab = False
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spaceAfterMarker = True
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elif second_char == "\t":
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spaceAfterMarker = True
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if (state.bsCount[startLine] + offset) % 4 == 3:
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# ' >\t test '
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# ^ -- position start of line here (tab has width==1)
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pos += 1
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initial += 1
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offset += 1
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adjustTab = False
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else:
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# ' >\t test '
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# ^ -- position start of line here + shift bsCount slightly
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# to make extra space appear
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adjustTab = True
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else:
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spaceAfterMarker = False
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oldBMarks = [state.bMarks[startLine]]
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state.bMarks[startLine] = pos
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while pos < max:
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ch = state.src[pos]
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if isStrSpace(ch):
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if ch == "\t":
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offset += (
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4
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- (offset + state.bsCount[startLine] + (1 if adjustTab else 0)) % 4
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)
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else:
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offset += 1
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else:
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break
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pos += 1
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oldBSCount = [state.bsCount[startLine]]
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state.bsCount[startLine] = (
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state.sCount[startLine] + 1 + (1 if spaceAfterMarker else 0)
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)
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lastLineEmpty = pos >= max
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oldSCount = [state.sCount[startLine]]
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state.sCount[startLine] = offset - initial
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oldTShift = [state.tShift[startLine]]
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state.tShift[startLine] = pos - state.bMarks[startLine]
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terminatorRules = state.md.block.ruler.getRules("blockquote")
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oldParentType = state.parentType
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state.parentType = "blockquote"
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# Search the end of the block
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#
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# Block ends with either:
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# 1. an empty line outside:
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# ```
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# > test
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#
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# ```
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# 2. an empty line inside:
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# ```
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# >
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# test
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# ```
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# 3. another tag:
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# ```
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# > test
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# - - -
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# ```
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# for (nextLine = startLine + 1; nextLine < endLine; nextLine++) {
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nextLine = startLine + 1
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while nextLine < endLine:
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# check if it's outdented, i.e. it's inside list item and indented
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# less than said list item:
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#
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# ```
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# 1. anything
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# > current blockquote
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# 2. checking this line
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# ```
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isOutdented = state.sCount[nextLine] < state.blkIndent
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pos = state.bMarks[nextLine] + state.tShift[nextLine]
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max = state.eMarks[nextLine]
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if pos >= max:
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# Case 1: line is not inside the blockquote, and this line is empty.
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break
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evaluatesTrue = state.src[pos] == ">" and not isOutdented
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pos += 1
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if evaluatesTrue:
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# This line is inside the blockquote.
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# set offset past spaces and ">"
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initial = offset = state.sCount[nextLine] + 1
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try:
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next_char: str | None = state.src[pos]
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except IndexError:
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next_char = None
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# skip one optional space after '>'
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if next_char == " ":
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# ' > test '
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# ^ -- position start of line here:
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pos += 1
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initial += 1
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offset += 1
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adjustTab = False
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spaceAfterMarker = True
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elif next_char == "\t":
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spaceAfterMarker = True
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if (state.bsCount[nextLine] + offset) % 4 == 3:
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# ' >\t test '
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# ^ -- position start of line here (tab has width==1)
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pos += 1
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initial += 1
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offset += 1
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adjustTab = False
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else:
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# ' >\t test '
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# ^ -- position start of line here + shift bsCount slightly
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# to make extra space appear
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adjustTab = True
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else:
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spaceAfterMarker = False
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oldBMarks.append(state.bMarks[nextLine])
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state.bMarks[nextLine] = pos
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while pos < max:
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ch = state.src[pos]
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if isStrSpace(ch):
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if ch == "\t":
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offset += (
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4
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- (
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offset
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+ state.bsCount[nextLine]
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+ (1 if adjustTab else 0)
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)
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% 4
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)
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else:
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offset += 1
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else:
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break
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pos += 1
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lastLineEmpty = pos >= max
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oldBSCount.append(state.bsCount[nextLine])
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state.bsCount[nextLine] = (
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state.sCount[nextLine] + 1 + (1 if spaceAfterMarker else 0)
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)
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oldSCount.append(state.sCount[nextLine])
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state.sCount[nextLine] = offset - initial
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oldTShift.append(state.tShift[nextLine])
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state.tShift[nextLine] = pos - state.bMarks[nextLine]
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nextLine += 1
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continue
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# Case 2: line is not inside the blockquote, and the last line was empty.
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if lastLineEmpty:
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break
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# Case 3: another tag found.
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terminate = False
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for terminatorRule in terminatorRules:
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if terminatorRule(state, nextLine, endLine, True):
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terminate = True
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break
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if terminate:
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# Quirk to enforce "hard termination mode" for paragraphs;
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# normally if you call `tokenize(state, startLine, nextLine)`,
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# paragraphs will look below nextLine for paragraph continuation,
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# but if blockquote is terminated by another tag, they shouldn't
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state.lineMax = nextLine
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if state.blkIndent != 0:
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# state.blkIndent was non-zero, we now set it to zero,
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# so we need to re-calculate all offsets to appear as
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# if indent wasn't changed
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oldBMarks.append(state.bMarks[nextLine])
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oldBSCount.append(state.bsCount[nextLine])
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oldTShift.append(state.tShift[nextLine])
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oldSCount.append(state.sCount[nextLine])
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state.sCount[nextLine] -= state.blkIndent
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break
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oldBMarks.append(state.bMarks[nextLine])
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oldBSCount.append(state.bsCount[nextLine])
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oldTShift.append(state.tShift[nextLine])
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oldSCount.append(state.sCount[nextLine])
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# A negative indentation means that this is a paragraph continuation
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#
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state.sCount[nextLine] = -1
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nextLine += 1
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oldIndent = state.blkIndent
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state.blkIndent = 0
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token = state.push("blockquote_open", "blockquote", 1)
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token.markup = ">"
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token.map = lines = [startLine, 0]
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state.md.block.tokenize(state, startLine, nextLine)
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token = state.push("blockquote_close", "blockquote", -1)
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token.markup = ">"
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state.lineMax = oldLineMax
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state.parentType = oldParentType
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lines[1] = state.line
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# Restore original tShift; this might not be necessary since the parser
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# has already been here, but just to make sure we can do that.
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for i, item in enumerate(oldTShift):
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state.bMarks[i + startLine] = oldBMarks[i]
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state.tShift[i + startLine] = item
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state.sCount[i + startLine] = oldSCount[i]
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state.bsCount[i + startLine] = oldBSCount[i]
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state.blkIndent = oldIndent
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return True
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