define -> [ regexToMatch: /Misplaced alignment tab character \&/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Misplaced_alignment_tab_character_%26" humanReadableHint: """ You have placed an alignment tab character '&' in the wrong place. If you want to align something, you must write it inside an align environment such as \\begin{align} \u2026 \\end{align}, \\begin{tabular} \u2026 \\end{tabular}, etc. If you want to write an ampersand '&' in text, you must write \\& instead. """ , regexToMatch: /Extra alignment tab has been changed to \\cr/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Extra_alignment_tab_has_been_changed_to_%5Ccr" humanReadableHint: """ You have written too many alignment tabs in a table, causing one of them to be turned into a line break. Make sure you have specified the correct number of columns in your table. """ , regexToMatch: /Display math should end with \$\$/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Display_math_should_end_with_$$" humanReadableHint: """ You have forgotten a $ sign at the end of 'display math' mode. When writing in display math mode, you must always math write inside $$ \u2026 $$. Check that the number of $s match around each math expression. """ , regexToMatch: /Missing [{$] inserted./ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Missing_$_inserted" humanReadableHint: """ Check that your $'s match around math expressions. If they do, then you've probably used a symbol in normal text that needs to be in math mode. Symbols such as subscripts ( _ ), integrals ( \\int ), Greek letters ( \\alpha, \\beta, \\delta ), and modifiers (\\vec{x}, \\tilde{x} ) must be written in math mode. See the full list here.If you intended to use mathematics mode, then use $ \u2026 $ for 'inline math mode', $$ \u2026 $$ for 'display math mode' or alternatively \begin{math} \u2026 \end{math}. """ , regexToMatch: /(undefined )?[rR]eference(s)?.+(undefined)?/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/There_were_undefined_references" humanReadableHint: """ You have referenced something which has not yet been labelled. If you have labelled it already, make sure that what is written inside \\ref{...} is the same as what is written inside \\label{...}. """ , regexToMatch: /Citation .+ on page .+ undefined on input line .+/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Citation_XXX_on_page_XXX_undefined_on_input_line_XXX" humanReadableHint: """ You have cited something which is not included in your bibliography. Make sure that the citation (\\cite{...}) has a corresponding key in your bibliography, and that both are spelled the same way. """ , regexToMatch: /(Label .+)? multiply[ -]defined( labels)?/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/There_were_multiply-defined_labels" humanReadableHint: """ You have used the same label more than once. Check that each \\label{...} labels only one item. """ , regexToMatch: /`!?h' float specifier changed to `!?ht'/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/%60!h%27_float_specifier_changed_to_%60!ht%27" humanReadableHint: """ The float specifier 'h' is too strict of a demand for LaTeX to place your float in a nice way here. Try relaxing it by using 'ht', or even 'htbp' if necessary. If you want to try keep the float here anyway, check out the float package. """ , regexToMatch: /No positions in optional float specifier/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/No_positions_in_optional_float_specifier" humanReadableHint: """ You have forgotten to include a float specifier, which tells LaTeX where to position your figure. To fix this, either insert a float specifier inside the square brackets (e.g. \begin{figure}[h]), or remove the square brackets (e.g. \begin{figure}). Find out more about float specifiers here. """ , regexToMatch: /Undefined control sequence/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/Undefined_control_sequence" humanReadableHint: """ The compiler is having trouble understanding a command you have used. Check that the command is spelled correctly. If the command is part of a package, make sure you have included the package in your preamble using \\usepackage{...}. """ , regexToMatch: /File .+ not found/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/File_XXX_not_found_on_input_line_XXX" humanReadableHint: """ The compiler cannot find the file you want to include. Make sure that you have uploaded the file and specified the file location correctly. """ , regexToMatch: /LaTeX Error: Unknown graphics extension: \..+/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/LaTeX_Error:_Unknown_graphics_extension:_.XXX" humanReadableHint: """ The compiler does not recognise the file type of one of your images. Make sure you are using a supported image format for your choice of compiler, and check that there are no periods (.) in the name of your image. """ , regexToMatch: /LaTeX Error: Unknown float option `H'/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/LaTeX_Error:_Unknown_float_option_%60H%27" humanReadableHint: """ The compiler isn't recognizing the float option 'H'. Include \\usepackage{float} in your preamble to fix this. """ , regexToMatch: /LaTeX Error: Unknown float option `q'/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/LaTeX_Error:_Unknown_float_option_%60q%27" humanReadableHint: """ You have used a float specifier which the compiler does not understand. You can learn more about the different float options available for placing figures here. """ , regexToMatch: /LaTeX Error: \\math.+ allowed only in math mode/ extraInfoURL: "https://www.sharelatex.com/learn/Errors/LaTeX_Error:_%5Cmathrm_allowed_only_in_math_mode" humanReadableHint: """ You have used a font command which is only available in math mode. To use this command, you must be in maths mode (E.g. $ \u2026 $ or \\begin{math} \u2026 \\end{math}). If you want to use it outside of math mode, use the text version instead: \\textrm, \\textit, etc. """ , ruleId: "hint_mismatched_environment" regexToMatch: /Error: `([^']{2,})' expected, found `([^']{2,})'.*/ newMessage: "Error: environment does not match \\begin{$1} ... \\end{$2}" humanReadableHint: """ You have used \\begin{...} without a corresponding \\end{...}. """ , ruleId: "hint_mismatched_brackets" regexToMatch: /Error: `([^a-zA-Z0-9])' expected, found `([^a-zA-Z0-9])'.*/ newMessage: "Error: brackets do not match, found '$2' instead of '$1'" humanReadableHint: """ You have used an open bracket without a corresponding close bracket. """ ]