RVLq is a command-line tool which replaces tags, mostly in a file, with text, content of a file or the output of a command.
More information about RVLq : https://q37.info/s/3zhxvhdx.
A source file, named Source.txt, which contains tags, delimited by $:
Text 1: $text1$
Text 2: $text2$
Text 3: $text3$
Text 4: $text4$
Text 1 again followed by text 5: $text1$, $text5$
File content: $file$
Command output: $command$
The tag file, named Tags.txt, containing the definition of the tags in above file:
text1 &Simple text
text2 Text on 2 lines in the tags file, \
but displayed on one line thanks to the '\\' before the newline
# A comment.
text3 Text on one line in the tags file,\nbut displayed on 2 lines thanks to '\\n'
text4 Text with a tabulation here:>\t< thanks to '\\t'
text5 and another simple texte
file %File.txt
command @echo Text issued by the echo command
Another file, named File.txt, which is referenced in above file:
This is the content of a file!
Launching rvlq Tags.txt Source.txt outputs following:
Text 1: Simple text
Text 2: Text on 2 lines in the tags file, but displayed on one line thanks to the '\' before the newline
Text 3: Text on one line in the tags file,
but displayed on 2 lines thanks to '\n'
Text 4: Text with a tabulation here:> < thanks to '\t'
Text 1 again followed by text 5: Simple text, and another simple texte
File content: This is the content of a file!
Command output: Text issued by the echo command