new: now colon delimiter can be used in --filter command line option

Cargo.toml

@@ -4,7 +4,7 @@ categories = ["command-line-utilities"]
 description = "Utility for viewing json-formatted log files."
 keywords = ["cli", "human", "log"]
 name = "hl"
-version = "0.15.2-alpha.1"
+version = "0.15.2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/model.rs

@@ -482,20 +482,26 @@ pub struct FieldFilter {
 
 impl FieldFilter {
     fn parse(text: &str) -> Result<Self> {
-        let mut parts = text.split('=');
-        match (parts.next(), parts.next()) {
-            (Some(key), Some(value)) => {
-                let (key, match_policy, op) = Self::parse_mp_op(key, value)?;
-                let flat_key = key.as_bytes().iter().position(|&x| x == b'.').is_none();
-                Ok(Self {
-                    key: key.into(),
-                    match_policy,
-                    op,
-                    flat_key,
-                })
-            }
-            _ => Err(Error::WrongFieldFilter(text.into())),
+        let parse = |key, value| {
+            let (key, match_policy, op) = Self::parse_mp_op(key, value)?;
+            let flat_key = key.as_bytes().iter().position(|&x| x == b'.').is_none();
+            Ok(Self {
+                key: key.into(),
+                match_policy,
+                op,
+                flat_key,
+            })
+        };
+
+        if let Some(index) = text.find('=') {
+            return parse(&text[0..index], &text[index+1..]);
         }
+
+        if let Some(index) = text.find(':') {
+            return parse(&text[0..index], &text[index+1..]);
+        }
+
+        Err(Error::WrongFieldFilter(text.into()))
     }
 
     fn parse_mp_op<'k>(