Add TIL entry on searching the Git log for a filename pattern

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diff --git a/_tils/2020-10-11-search-changes-to-a-filename-pattern-in-git-history.md b/_tils/2020-10-11-search-changes-to-a-filename-pattern-in-git-history.md
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+---
+title: Search changes to a filename pattern in Git history
+date: 2020-10-11
+layout: post
+lang: en
+ref: search-changes-to-a-filename-pattern-in-git-history.md
+---
+
+This is [yet][git-til-1] [another][git-til-2] ["search in Git"][git-til-3] TIL
+entry. You could say that Git has a unintuitive CLI, or that is it very
+powerful.
+
+I wanted to search for an old file that I new that was in the
+history of the repository, but was deleted some time ago. So I didn't really
+remember the name, only bits of it.
+
+I immediately went to the list of TILs I had written on searching in Git, but
+it wasn't readily obvious how to do it, so here it goes:
+
+```shell
+git log -- *pattern*
+```
+
+You could add globs before the pattern to match things on any directory, and add
+our `-p` friend to promptly see the diffs:
+
+```shell
+git log - -- **/*pattern*
+```
+
+[git-til-1]: {% link _tils/2020-08-14-browse-a-git-repository-at-a-specific-commit.md %}
+[git-til-2]: {% link _tils/2020-08-16-search-in-git.md %}
+[git-til-3]: {% link _tils/2020-08-28-grep-online-repositories.md %}