diff --git a/src/bin/ent/main.rs b/src/bin/ent/main.rs
index e071233..549d16d 100644
--- a/src/bin/ent/main.rs
+++ b/src/bin/ent/main.rs
@@ -415,114 +415,116 @@ fn handle_command(
         Commands::Assign {
             issue_id,
             new_assignee,
-        } => match new_assignee {
-            Some(new_assignee) => {
-                let issues_database = entomologist::database::make_issues_database(
-                    issues_database_source,
-                    entomologist::database::IssuesDatabaseAccess::ReadWrite,
-                )?;
-                let mut issues = entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
-                let Some(issue) = issues.get_mut_issue(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                let old_assignee: String = match &issue.assignee {
-                    Some(assignee) => assignee.clone(),
-                    None => String::from("None"),
-                };
-                issue.set_assignee(new_assignee)?;
-                println!("issue: {}", issue_id);
-                println!("assignee: {} -> {}", old_assignee, new_assignee);
+        } => {
+            let issues = entomologist::database::read_issues_database(issues_database_source)?;
+            let Some(original_issue) = issues.issues.get(issue_id) else {
+                return Err(anyhow::anyhow!("issue {} not found", issue_id));
+            };
+            let old_assignee: String = match &original_issue.assignee {
+                Some(assignee) => assignee.clone(),
+                None => String::from("None"),
+            };
+            println!("issue: {}", issue_id);
+            match new_assignee {
+                Some(new_assignee) => {
+                    let issues_database = entomologist::database::make_issues_database(
+                        issues_database_source,
+                        entomologist::database::IssuesDatabaseAccess::ReadWrite,
+                    )?;
+                    let mut issues =
+                        entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
+                    let Some(issue) = issues.get_mut_issue(issue_id) else {
+                        return Err(anyhow::anyhow!("issue {} not found", issue_id));
+                    };
+                    println!("assignee: {} -> {}", old_assignee, new_assignee);
+                    issue.set_assignee(new_assignee)?;
+                }
+                None => {
+                    println!("assignee: {}", old_assignee);
+                }
             }
-            None => {
-                let issues = entomologist::database::read_issues_database(issues_database_source)?;
-                let Some(original_issue) = issues.issues.get(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                let old_assignee: String = match &original_issue.assignee {
-                    Some(assignee) => assignee.clone(),
-                    None => String::from("None"),
-                };
-                println!("issue: {}", issue_id);
-                println!("assignee: {}", old_assignee);
-            }
-        },
+        }
 
-        Commands::Tag { issue_id, tag } => match tag {
-            Some(tag) => {
-                // Add or remove tag.
-                if tag.len() == 0 {
-                    return Err(anyhow::anyhow!("invalid zero-length tag"));
+        Commands::Tag { issue_id, tag } => {
+            let issues = entomologist::database::read_issues_database(issues_database_source)?;
+            let Some(issue) = issues.issues.get(issue_id) else {
+                return Err(anyhow::anyhow!("issue {} not found", issue_id));
+            };
+            match tag {
+                Some(tag) => {
+                    // Add or remove tag.
+                    let issues_database = entomologist::database::make_issues_database(
+                        issues_database_source,
+                        entomologist::database::IssuesDatabaseAccess::ReadWrite,
+                    )?;
+                    let mut issues =
+                        entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
+                    let Some(issue) = issues.get_mut_issue(issue_id) else {
+                        return Err(anyhow::anyhow!("issue {} not found", issue_id));
+                    };
+                    if tag.len() == 0 {
+                        return Err(anyhow::anyhow!("invalid zero-length tag"));
+                    }
+                    if tag.chars().nth(0).unwrap() == '-' {
+                        let tag = &tag[1..];
+                        issue.remove_tag(tag)?;
+                    } else {
+                        issue.add_tag(tag)?;
+                    }
                 }
-                let issues_database = entomologist::database::make_issues_database(
-                    issues_database_source,
-                    entomologist::database::IssuesDatabaseAccess::ReadWrite,
-                )?;
-                let mut issues = entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
-                let Some(issue) = issues.get_mut_issue(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                if tag.chars().nth(0).unwrap() == '-' {
-                    let tag = &tag[1..];
-                    issue.remove_tag(tag)?;
-                } else {
-                    issue.add_tag(tag)?;
-                }
-            }
-            None => {
-                // Just list the tags.
-                let issues = entomologist::database::read_issues_database(issues_database_source)?;
-                let Some(issue) = issues.issues.get(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                match &issue.tags.len() {
-                    0 => println!("no tags"),
-                    _ => {
-                        // Could use `format!(" {:?}", issue.tags)`
-                        // here, but that results in `["tag1", "TAG2",
-                        // "i-am-also-a-tag"]` and i don't want the
-                        // double-quotes around each tag.
-                        for tag in &issue.tags {
-                            println!("{}", tag);
+                None => {
+                    // Just list the tags.
+                    match &issue.tags.len() {
+                        0 => println!("no tags"),
+                        _ => {
+                            // Could use `format!(" {:?}", issue.tags)`
+                            // here, but that results in `["tag1", "TAG2",
+                            // "i-am-also-a-tag"]` and i don't want the
+                            // double-quotes around each tag.
+                            for tag in &issue.tags {
+                                println!("{}", tag);
+                            }
                         }
                     }
                 }
             }
-        },
+        }
 
         Commands::DoneTime {
             issue_id,
             done_time,
-        } => match done_time {
-            Some(done_time) => {
-                // Add or remove tag.
-                let issues_database = entomologist::database::make_issues_database(
-                    issues_database_source,
-                    entomologist::database::IssuesDatabaseAccess::ReadWrite,
-                )?;
-                let mut issues = entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
-                let Some(issue) = issues.get_mut_issue(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                let done_time = match chrono::DateTime::parse_from_rfc3339(done_time) {
-                    Ok(done_time) => done_time.with_timezone(&chrono::Local),
-                    Err(e) => {
-                        eprintln!("failed to parse done-time from {}", done_time);
-                        return Err(e.into());
-                    }
-                };
-                issue.set_done_time(done_time)?;
-            }
-            None => {
-                let issues = entomologist::database::read_issues_database(issues_database_source)?;
-                let Some(issue) = issues.issues.get(issue_id) else {
-                    return Err(anyhow::anyhow!("issue {} not found", issue_id));
-                };
-                match &issue.done_time {
+        } => {
+            let issues = entomologist::database::read_issues_database(issues_database_source)?;
+            let Some(issue) = issues.issues.get(issue_id) else {
+                return Err(anyhow::anyhow!("issue {} not found", issue_id));
+            };
+            match done_time {
+                Some(done_time) => {
+                    // Add or remove tag.
+                    let issues_database = entomologist::database::make_issues_database(
+                        issues_database_source,
+                        entomologist::database::IssuesDatabaseAccess::ReadWrite,
+                    )?;
+                    let mut issues =
+                        entomologist::issues::Issues::new_from_dir(&issues_database.dir)?;
+                    let Some(issue) = issues.get_mut_issue(issue_id) else {
+                        return Err(anyhow::anyhow!("issue {} not found", issue_id));
+                    };
+                    let done_time = match chrono::DateTime::parse_from_rfc3339(done_time) {
+                        Ok(done_time) => done_time.with_timezone(&chrono::Local),
+                        Err(e) => {
+                            eprintln!("failed to parse done-time from {}", done_time);
+                            return Err(e.into());
+                        }
+                    };
+                    issue.set_done_time(done_time)?;
+                }
+                None => match &issue.done_time {
                     Some(done_time) => println!("done_time: {}", done_time),
                     None => println!("None"),
-                };
-            }
-        },
+                },
+            };
+        }
 
         Commands::Depend {
             issue_id,
diff --git a/tools/time-ent b/tools/time-ent
deleted file mode 100755
index 366a02c..0000000
--- a/tools/time-ent
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/bin/bash
-#
-# * Create a temporary ent issue database branch based on a specific
-#   commit in `entomologist-data`.
-#
-# * Perform some ent operations on this temporary branch and measure
-#   the runtime.
-#
-# * Clean up by deleteting the temporary branch.
-
-set -e
-#set -x
-
-
-# This is a commit in the `entomologist-data` branch that we're somewhat
-# arbitrarily using here to time different `ent` operations.
-TEST_COMMIT=a33f1165d77571d770f1a1021afe4c07360247f0
-
-# This is the branch that we create from the above commit and test our
-# `ent` operations on.  We'll delete this branch when we're done with
-# the tests.
-TEST_BRANCH=$(mktemp --dry-run entomologist-data-XXXXXXXX)
-
-
-function time_ent() {
-    echo timing: ent "$@"
-    time -p ent -b "${TEST_BRANCH}" "$@"
-    echo
-}
-
-
-git branch "${TEST_BRANCH}" "${TEST_COMMIT}"
-
-time_ent tag 7e2a3a59fb6b77403ff1035255367607
-time_ent tag 7e2a3a59fb6b77403ff1035255367607 new-tag
-
-time_ent assign 7e2a3a59fb6b77403ff1035255367607
-time_ent assign 7e2a3a59fb6b77403ff1035255367607 new-user
-
-time_ent done-time 7e2a3a59fb6b77403ff1035255367607
-time_ent done-time 7e2a3a59fb6b77403ff1035255367607 2025-04-01T01:23:45-06:00
-
-git branch -D "${TEST_BRANCH}"