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Full Discussion: awk getline
Top Forums Shell Programming and Scripting awk getline Post 302993589 by Don Cragun on Saturday 11th of March 2017 03:04:36 PM
Old 03-11-2017
Hi Scrutinizer,
The point of the loop in this code seems to be to return data from the last line of text produced by the command named by c. Without the loop, the function returns the first line of text produced instead of the last. Neither form gathers more than one line of output.
 

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COQ-TEX(1)						      General Commands Manual							COQ-TEX(1)

NAME
coq-tex - Process Coq phrases embedded in LaTeX files SYNOPSIS
coq-tex [ -o output-file ] [ -n line-width ] [ -image coq-image ] [ -w ] [ -v ] [ -sl ] [ -hrule ] [ -small ] input-file ... DESCRIPTION
The coq-tex filter extracts Coq phrases embedded in LaTeX files, evaluates them, and insert the outcome of the evaluation after each phrase. Three LaTeX environments are provided to include Coq code in the input files: coq_example The phrases between egin{coq_example} and end{coq_example} are evaluated and copied into the output file. Each phrase is followed by the response of the toplevel loop. coq_example* The phrases between egin{coq_example*} and end{coq_example*} are evaluated and copied into the output file. The responses of the toplevel loop are discarded. coq_eval The phrases between egin{coq_eval} and end{coq_eval} are silently evaluated. They are not copied into the output file, and the responses of the toplevel loop are discarded. The resulting LaTeX code is stored in the file file.v.tex if the input file has a name of the form file.tex, otherwise the name of the out- put file is the name of the input file with `.v.tex' appended. The files produced by coq-tex can be directly processed by LaTeX. Both the Coq phrases and the toplevel output are typeset in typewriter font. OPTIONS
-o output-file Specify the name of a file where the LaTeX output is to be stored. A dash `-' causes the LaTeX output to be printed on standard out- put. -n line-width Set the line width. The default is 72 characters. The responses of the toplevel loop are folded if they are longer than the line width. No folding is performed on the Coq input text. -image coq-image Cause the file coq-image to be executed to evaluate the Coq phrases. By default, this is the command coqtop without specifying any path which is used to evaluate the Coq phrases. -w Cause lines to be folded on a space character whenever possible, avoiding word cuts in the output. By default, folding occurs at the line width, regardless of word cuts. -v Verbose mode. Prints the Coq answers on the standard output. Useful to detect errors in Coq phrases. -sl Slanted mode. The Coq answers are written in a slanted font. -hrule Horizontal lines mode. The Coq parts are written between two horizontal lines. -small Small font mode. The Coq parts are written in a smaller font. CAVEATS
The egin... and end... phrases must sit on a line by themselves, with no characters before the backslash or after the closing brace. Each Coq phrase must be terminated by `.' at the end of a line. Blank space is accepted between `.' and the newline, but any other charac- ter will cause coq-tex to ignore the end of the phrase, resulting in an incorrect shuffling of the responses into the phrases. (The responses ``lag behind''.) SEE ALSO
coqtop (1). 29 March 1995 COQ-TEX(1)
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