Add word counting script + call it in .latexmkrc

.latexmkrc

@@ -6,6 +6,9 @@ $aux_dir       = ".aux";
 $bibtex        = "biber %O %S";
 $pdf_previewer = "zathura %O %S";
 
+# Count words after compiling the full thing
+$success_cmd = 'if [ %R = thesis ]; then ./wordcount.sh; fi';
+
 # Create minted output path
 use File::Path qw(make_path);
 make_path("$aux_dir/_minted");

wordcount.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Relative paths
+cd -- "$(dirname -- "${BASH_SOURCE[0]}")"
+
+wordcount=$(pdftotext .out/thesis.pdf - | wc -w)
+timestamp=$(date +%FT%T%:z)
+
+if [[ ! -s wordcounts.csv ]]; then
+    printf 'date,wordcount\n' >> wordcounts.csv
+fi
+printf '%s,%s\n' "$timestamp" "${wordcount//[[:space:]]/}" >> wordcounts.csv