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()

		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:]
			}

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.

		return false, false, err
	}
	status, err := io.ReadAll(os.NewFile(uintptr(fd), statusFile))
	if err != nil {
		return false, false, err
	}
	lines := bytes.Split(status, []byte{'\n'})
	// Find the State line.
	stateLineIdx := -1
	for i, line := range lines {
		if bytes.HasPrefix(line, []byte("State:")) {
			stateLineIdx = i
			break
		}
	}
	if stateLineIdx < 0 {
		// Malformed status file?

		}
		if path != m[2] {
			lines[i] = strings.ReplaceAll(line, `"`+m[2]+`"`, `"`+path+`"`)
		}
	}

	lines[0] = generatedHeader + "// This is a bootstrap copy of " + srcFile + "\n\n//line " + srcFile + ":1\n" + lines[0]

	return strings.Join(lines, "")

// around the limitations of the pb library, which will only support single lines. To do this, we aggregate
// the current components into a single line, and as components complete there final state is persisted to a new line.
type Log struct {
	components map[string]*ManifestLog
	bar        *pb.ProgressBar
	template   string
	mu         sync.Mutex

  string code;
  for (const Line& line : lines_) {
    absl::StrAppend(&code, string(line.indent * spaces_per_indent_, ' '),
                    line.text, "\n");
  }
  return code;
}

void SourceCode::AddLineWithIndent(const string& line) {
  ValidateAndAddLine(current_indent_, line);
}

void SourceCode::AddLineWithoutIndent(const string& line) {
  ValidateAndAddLine(0, line);
}