}

    def "returns last line if the limit is one"() {
        given:
        def logFile = log("""\
            line1
            line2
            line3""")

        expect:
        DaemonLogFileUtils.tail(logFile, 1) == "line3"
    }

    def "input-ending eoln is ignored"() {
        given:
        def logFile = log("""\
            line1
            line2
            line3
        """)

			stack = append(stack, callID{
				file: callees[j].File,
				line: callees[j].Line,
			})
		}
		file.lines[f.Line] = append(file.lines[f.Line], sourceInst{addr, stack})

		// Remember the first function name encountered per source line
		// and assume that that line belongs to that function.
		if _, ok := file.funcName[f.Line]; !ok {
			file.funcName[f.Line] = f.Func
		}
	}
}

		}
		f.pcln = pcln
	}
	addr -= f.offset
	file, line, fn := f.pcln.PCToLine(addr)
	if fn != nil {
		frame := []driver.Frame{
			{
				Func: fn.Name,
				File: file,
				Line: line,
			},
		}
		return frame, nil
	}

	frames := f.dwarfSourceLine(addr)
	if frames != nil {
		return frames, nil
	}

	return nil, fmt.Errorf("no line information for PC=%#x", addr)
}

		if err != nil {
			return nil, err
		}

		lines := strings.SplitAfter(string(content), "\n")
		active := false
		for lineno, line := range lines {
			lineno++

			// Ignore comments and commented-out code.
			if i := strings.Index(line, "//"); i >= 0 {
				line = line[:i]
			}
			line = strings.TrimSpace(line)

			// We start checking code at a TEXT line for a frameless function.

    TestCharSource lines = new TestCharSource(LINES);
    assertEquals("foo", lines.readFirstLine());
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }

  public void testReadLines_toList() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    assertEquals(ImmutableList.of("foo", "bar", "baz", "something"), lines.readLines());

		return
	}
	peek, _ := r.R.Peek(s)
	for len(peek) > 0 && n < 1000 {
		var line []byte
		line, peek, _ = bytes.Cut(peek, nl)
		if len(line) == 0 || (len(line) == 1 && line[0] == '\r') {
			// Blank line separating headers from the body.
			break
		}
		if line[0] == ' ' || line[0] == '\t' {
			// Folded continuation of the previous line.
			continue
		}
		n++
	}
	return n
}

		base.Fatalf("go: reading go env config: %v", err)
	}
	lines := strings.SplitAfter(string(data), "\n")
	if lines[len(lines)-1] == "" {
		lines = lines[:len(lines)-1]
	} else {
		lines[len(lines)-1] += "\n"
	}
	return lines
}

func updateEnvFile(add map[string]string, del map[string]bool) {
	lines := readEnvFileLines(len(add) == 0)

		want[cname] = addr
		group = make(map[string]string)
	}
	lines := bytes.Split(out, []byte{'\r', '\n'})
	for _, line := range lines {
		if len(line) == 0 {
			processGroup()
			continue
		}
		i := bytes.IndexByte(line, ':')
		if i == -1 {
			t.Fatalf("line %q has no : in it", line)
		}
		group[string(line[:i])] = string(bytes.TrimSpace(line[i+1:]))
	}
	processGroup()

trace parsers.

# Text format specification

The trace text format produced and consumed by this package is a line-oriented
format.

The first line in each text trace is the header line.

	Trace Go1.XX

Following that is a series of event lines. Each event begins with an
event name, followed by zero or more named unsigned integer arguments.

		var line *Line
		if r.Syntax == nil {
			line = &Line{Token: []string{AutoQuote(r.Mod.Path), r.Mod.Version}}
			r.Syntax = line
			if r.Indirect {
				r.setIndirect(true)
			}
		} else {
			line = new(Line)
			*line = *r.Syntax
			if !line.InBlock && len(line.Token) > 0 && line.Token[0] == "require" {
				line.Token = line.Token[1:]
			}