Report.marker: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/lsp/report.bend as Report
Lines 54-59 of bolt@1.27.0.0/src/lsp/report.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/lsp/report.bend&start_line=54&end_line=59

import Base

# the line number a source line of the report carries, when it does: `12>|
# code` marks line 12, padding before the digits aside; a line of context
# (`11 | code`) marks none, whatever its code holds
def marker(ss: String) -> Maybe<&2, U32>:
  +tt = String.trim_start(ss)
  marker.go(tt, tt, 0n)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.trim_start
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lsp/report.bend&name=marker.go