`-r` switch does not respect `indentPreamble: 0`

[torik42]

original .tex code

\documentclass{article}

\usepackage{mathtools}
\DeclarePairedDelimiter{\norm}{\lVert}{\rVert}

\begin{document}

$\lVert A \rVert$

\end{document}

yaml settings

indentPreamble: 0

replacements:
  -
    substitution: |-
      s/
        (?<!\\) \\l?Vert
        \s* (?P<content> .+? ) \s*
        (?<!\\) \\r?Vert
      /\\norm{$+{content}}/sgx

actual/given output

\documentclass{article}

\usepackage{mathtools}
\DeclarePairedDelimiter{\norm}{\norm{}{}}

\begin{document}

$\norm{A}$

\end{document}

desired or expected output

\documentclass{article}

\usepackage{mathtools}
\DeclarePairedDelimiter{\norm}{\lVert}{\rVert}

\begin{document}

$\norm{A}$

\end{document}

anything else

My expectation was that replacements would respect the indentPreamble key (also the modifylinebreaks switch respects it). One could have a separate setting to enable replacements in the preamble, if one wants them also there. Or a key to only use latexindent for the preamble. This would allow for different configurations for the preamble and the rest by running latexindent twice.

[cmhughes]

I have a few ideas on how to do this. Hoping to get to this over the weekend.

[cmhughes]

Here are a couple of options, both give your desired output.

option 1

Using the following

replacements:
  -
    substitution: |-
      s/
        (.*?)(\\begin\{document.*)/
        my $preamble = $1;                    # store preamble
        my $body = $2;                        # store body
        $body =~ s|(?<!\\) \\l?Vert           # 
                   \s* (?P<content> .+? ) \s* # make substitutions
                   (?<!\\) \\r?Vert           # on BODY
                  |\\norm{$+{content}}|sgx;   # 
        $preamble.$body;/esgx                 # reassemble

and calling

latexindent.pl -l -r myfile.tex

option 2

Using

specialBeginEnd:
  preamble:
    begin: \\documentclass
    end: \\begin\{document\}
    lookForThis: verbatim

replacements:
  -
    substitution: |-
      s/
        (?<!\\) \\l?Vert           
                   \s* (?P<content> .+? ) \s* 
                   (?<!\\) \\r?Vert           
       /\\norm{$+{content}}/sgx   

stores the preamble as a verbatim block and using the rv switch as in

latexindent.pl -rv -l myfile.tex

[cmhughes]

Let me know if you need anything else on this.

[torik42]

Sorry for the (very) late reply. For my specific case I just use a negative lookbehind for the \DeclarePairedDelimiter now. The evaluate modifier still gave me some other ideas (I tried it quite some time ago and couldn’t make it work), now it worked. Thanks.