Forgive me Greg for I have sinned.

.gitignore

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+hello-world
+.sheclang.*.cpp
+.swp*
+

LICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>

hello-world.cpp

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+#!/usr/bin/env sheclang
+
+#include <stdio.h>
+
+int main(int argc, char  *argv[]) {
+
+	printf("Hello World!\n");
+
+	return 0;
+}

sheclang

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+#!/bin/bash
+# sheclang - shebang (#!) meets automatic clang.
+# Luke Renaud
+# 2021-09-06 (Public Domain)
+# _____________________________________________________________________________
+# I got tired of the turnaround time when debugging my code, and I don't want
+# to make a full build system or frankly even maintain a ./build.sh script for
+# each project. I'm well on the road to re-inventing another build system, but
+# if we can make python a simple ./<my code>.py, why can't we do the same for
+# C and C++?
+#
+# See hello-world.cpp for the source code. Install this guy wherever your bins
+# are stored, try it, weep, then rejoice that you have one less buffer open.
+#
+# _____________________________________________________________________________
+# LICENSE:
+#	Public Domain (y'all really care?)
+
+set -e
+export IFS=$'\n'
+
+## Phase 1: Input Collection & Argument Checking
+if [[ $# -lt 1 ]]; then
+	printf "sheclang requires exactly one build file arugment.\n" >&2
+	exit
+fi
+
+file_input="$1"
+target_dir="$(dirname "${file_input}")"
+
+# TODO: Validate the extension of the output file before fucking with it.
+file_input_name="$(basename "${file_input}")"
+file_output="${file_input_name%.*}"
+file_extension="${file_input_name##*.}"
+if [[ "$file_input_name" == "$file_output" ]]; then
+	(
+		printf "ERROR! Input and output file names match.\n"
+		printf "    file input: %s\n" "$file_input_name"
+		printf "   file output: %s\n" "$file_output"
+	) >&2
+	exit;
+fi
+
+## Phase 2: File cleanup
+# Build the copy the main source file without a hashbang line
+file_input_corrected="${target_dir}/.sheclang.${file_output}.${file_extension}"
+cp "${file_input}" "${file_input_corrected}"
+
+printf "//" | dd conv=notrunc of="${file_input_corrected}" \
+	count=2 bs=1 status=none
+
+file_output="${target_dir}/${file_output}"
+
+## Phase 3: Build the file, and execute it with the remaining arguments.
+shift # remove the source file from the BASH argument tree.
+
+# Runn my prefered build script. Customize to your tastes
+clang++ -o "$file_output" "$file_input_corrected"
+
+# And execute with the remaining arguments
+"$file_output" $*