From c6a4b154046e1bb45569506d3a1e486fc854df4e009c5ceaf4d9829f7730efbb Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Fri, 22 Mar 2024 00:37:12 +0300
Subject: [PATCH] supercatlessness

---
 lib.zsh.rc | 27 ++++++++++++++++++++++-----
 list       |  2 +-
 show       |  4 ++--
 3 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/lib.zsh.rc b/lib.zsh.rc
index e4b582b..09e1953 100644
--- a/lib.zsh.rc
+++ b/lib.zsh.rc
@@ -20,15 +20,32 @@ dedash() {
     $PERL -npe 's/([^-])-([^-])/$1 $2/g ; s/-(-+)/$1/g'
 }
 
-supercat() { cat ; }
-if [[ -z $NO_COLOR ]] && command -v spc > /dev/null 2> /dev/null ; then
-    supercat() { spc $@ ; }
-fi
+# Usage: colourise ColourSpec:RegExp [ColourSpec:RegExp ...]
+# It is intended to be a drop-in replacement for supercat utility.
+# ColourSpec is comma delimited list of ANSI codes for colour setting.
+# Look for zsh'es Functions/Misc/colors documentation about possible
+# colour values. For example to set bold red on green background you use
+# "bold,fg-red,bg-green" as a ColourSpec.
+# RegExp is POSIX extended regular expression of the text you want to
+# colourise.
+colourise() {
+    if [[ -n $NO_COLOR ]] || [[ $# -eq 0 ]] ; then
+        cat
+        return
+    fi
+    (( ${+colour} )) || { autoload -Uz colors ; colors ; }
+    local lc=$'\e[' rc=m colr=""
+    local spec=(${(s/:/)1})
+    shift
+    for c (${(s/,/)${spec[1]}}) colr="${col}${lc}${colour[$c]}${rc}"
+    local re=${(j/:/)spec[2,-1]}
+    sed -E "s/${re}/${colr}&${reset_color}/g" | colourise $@
+}
 
 delim() {
     {
         local i
         for i ({1..40}) print -n -- -
         print
-    } | supercat -e mag,".*"
+    } | colourise magenta:".*"
 }
diff --git a/list b/list
index 13a1be1..e6e13a3 100755
--- a/list
+++ b/list
@@ -43,4 +43,4 @@ for issue (issues/**/created) {
     print -n `cat issues/$issue/created`\\t$issue\\t
     print $tagsTheir
 } | sort -r |
-supercat -e grn,"^.{19}" -e cya,"	[^	]*$" -e red,"	.*\/"
+colourise green:"^.{19}" cyan:"	[^	]*$" red:"	.*\/"
diff --git a/show b/show
index e405bde..45b6a93 100755
--- a/show
+++ b/show
@@ -4,9 +4,9 @@ root=$0:h:a
 . $root/lib.zsh.rc
 
 issue=${1#issues/}
-print $issue:h | supercat -e red,".*" | read proj
+print $issue:h | colourise red:".*" | read proj
 print `cat issues/$issue/created` \| $proj/`print $issue:t | dedash`
-$root/tag-list $issue | supercat -e cya,".*"
+$root/tag-list $issue | colourise cyan:".*"
 deps=(issues/$issue/deps/*(N))
 [[ ${#deps} -eq 0 ]] || {
     delim
-- 
2.48.1