Enum ChangeDescription 

pub enum ChangeDescription {
    SetField {
        field: String,
        old_value: String,
        new_value: String,
    },
    UnsetField {
        field: String,
        old_value: String,
    },
    AddTag {
        tag: String,
    },
    RemoveTag {
        tag: String,
    },
    SetBody {
        old_len: usize,
        new_len: usize,
    },
    AppendBody {
        added_len: usize,
    },
    ClearBody {
        old_len: usize,
    },
}

Describes a single change made to a file.

Variants

SetField

Fields

field: String

old_value: String

new_value: String

UnsetField

Fields

field: String

old_value: String

AddTag

Fields

tag: String

RemoveTag

Fields

tag: String

SetBody

Replace the entire body (everything after the closing --- of the frontmatter). old_len / new_len are byte counts, surfaced so the report can say “shrank body from 1.2k → 80 bytes” without echoing arbitrary user prose.

Fields

old_len: usize

new_len: usize

AppendBody

Append text to the existing body (separated by a caller-chosen separator, default "\n"). added_len is the byte count of the appended text (excluding separator) for the same reason.

Fields

added_len: usize

ClearBody

Clear the body entirely — semantic shorthand for “set to empty”. Carries old_len so an audit log can record what was removed.

Fields

old_len: usize

Trait Implementations

impl Debug for ChangeDescription

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ChangeDescription

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.