# Testing for multi-line paragraphs

I'm running into a situation where I need to insert some code (specifically, \hfill) only if my paragraph runs more than one line. This isn't a simple alignment thing, as I'm working with right-to-left text interaction with left-to-right text on the same line, and anyway, this is what it's come to. Does anyone know if there's an internal variable LaTeX sets when it moves text onto the next line, and how I might use that to do something like (note, I don't know how to use conditional code in LaTeX, so this is heuristic):

\if\multiline\then{ \hfill}.


EDIT:

I need an \hfill in a right-to-left environment, which TeX doesn't automatically provide. I have something like:

    \newcommand{\hangparag}[2]{\hangindent#1 \hangafter#2 \leftskip 0.5em \parindent -0.5em}
\newcommand{\entry}[2]{\hangparag{-0.5em}{1}{\textbf{#1} #2}\par}
\newcommand{\h}[1]{\hspace{0.5cm}\RL{\texthebrew{#1}\hfill}}

\flushright
\entry{Z}{\h{דער זעט, ־ן}}


I was having trouble with the double-sided indents when the translation was on a second line, but \hfill fixed that, but now if I want to add English text next to the translation, with one-line translations, I have an \hfill pushing my English over to the side of my definition. For example:

    \entry{zany}{[MEShÚGE] \h{משוגע}}


ends up with with the transcription somewhere in between "zany" and "משוגע", when I actually want it next to "משוגע".

MINIMAL EXAMPLE:

\documentclass[10pt]{book}
\usepackage{polyglossia}
\usepackage{multicol}
\newcommand{\hangparag}[2]{\hangindent#1 \hangafter#2 \leftskip 0.5em \parindent -0.5em}
\setdefaultlanguage{english}
\setotherlanguages{hebrew}
\newfontfamily\hebrewfont[Script=Hebrew]{Microsoft Sans Serif}
\newcommand{\entry}[2]{\hangparag{-0.5em}{1}{\textbf{#1}\hspace{0.5cm}\hfill #2}\par}
\newcommand{\h}[1]{\RL{\texthebrew{#1}\hfill}}
\begin{document}
\flushright
\setlength{\columnseprule}{0.4pt}
\begin{multicols*}{2}
\entry{Z, n. (letter)}{\h{דער זעט, ־ן}}
\entry{zany}{[MEShÚGE] \h{משוגע}}
\entry{zeal}{\h{דאָס התלהבֿות; דער ברען; די התמדה; דער אײפֿער; דאָס/די פֿאַרברענטקײט}}
\end{multicols*}
\end{document}

-
It's not very clear what you need, since TeX adds automatically \hfill at the end of a paragraph. Would you please add a "real life" example? –  egreg Jul 22 '11 at 9:11
He/She might be working in verbatim environment enclosing long characters that cannot be split across lines. –  xport Jul 22 '11 at 9:38
Check my updated question, hopefully that will clarify. –  magicker72 Jul 22 '11 at 10:18
Not quite clearer. You should provide a minimal preamble so that we can try compiling the sample. –  egreg Jul 22 '11 at 10:23
I've given an example with three entries, one normal, one with English transcription, and one with multi-line. –  magicker72 Jul 22 '11 at 10:32

I would simply change \hfill in the definition of \h into \hfil: this is a "lower order infinity" stretching space that is defeated by the \hfill provided by the paragraph end.