--hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

    --hash=sha256:fe3b385d996ee0822fd46528d9f0443b880d4d05528fd26a9119a54ec3f91c69
    # via -r ci/official/requirements_updater/requirements.in

# The following packages are considered to be unsafe in a requirements file:
setuptools==78.1.1 \
    --hash=sha256:c3a9c4211ff4c309edb8b8c4f1cbfa7ae324c4ba9f91ff254e3d305b9fd54561 \
    --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d

//
// UnreadByte returns an error if the most recent method called on the
// [Reader] was not a read operation. Notably, [Reader.Peek], [Reader.Discard], and [Reader.WriteTo] are not
// considered read operations.
func (b *Reader) UnreadByte() error {
	if b.lastByte < 0 || b.r == 0 && b.w > 0 {
		return ErrInvalidUnreadByte
	}
	// b.r > 0 || b.w == 0
	if b.r > 0 {
		b.r--
	} else {